Aperture and video on the Nikon CZK

When shooting video on Nikon digital SLR cameras, there are many features for controlling the lens aperture. In this article I will try to explain some of them.

The article is not about a ladybug, but about problems with aperture control on Nikon DSLRs

The article is not about a ladybug, but about problems with aperture control on Nikon DSLRs

The essence of the problem

The vast majority of Nikon lenses have mechanical aperture blades. Since 1957, the principle of operation and the mechanism itself have not changed a bit. Its essence lies in the fact that a special lever located in the bayonet shaft of the camera, which I call the 'pusher', controls the level of opening / closing of the diaphragm through a special lever located on the side of the lens mount, which I call the 'jumper'.

This is what the diaphragm control lever ('pusher') looks like on all the central control rooms Nikon.

Aperture jump on Nikon cameras

Aperture jump on Nikon cameras

The lever performs translational movements down and up.

Make your own observation.

  1. Remove the lens from the camera.
  2. Set your camera to 'M' mode.
  3. Set the shutter speed, for example, 1 / 125s.
  4. Turn the camera mount toward you.
  5. Press the shutter button and watch how this lever works. The lever will lower and rise back. The operation cycle of the lever is clearly shown in the video below.

The full shutter release cycle is described in my article 'Shutter noise'.

And this is how the aperture control lever on the lens looks like (the same 'jump rope', or, in scientific terms - 'linkage levers'):

Mechanical diaphragm protrusion

Nikon lens mount for mechanical iris control.

The 'Jump' also performs forward and upward movements.

Conduct your own observation - remove the lens from the camera. If it is a lens with an aperture control ring (NON-G type), use this ring to set the maximum number F (usually it is F / 16, 22 or 32). Remove the front lens cap. Point the lens with the front lens to a well-lit area (such as a computer monitor), and rotate the lens toward your eyes with the rear lens. Use your hand to push the diaphragm lever (shown in the figure above) to the extreme position. In this case, you will see how the aperture blades move in the lens. This procedure is absolutely safe, the main thing is not to get your hands on the back lens.

In this video you can see the work of the 'pusher' on the camera. Nikon D3s:

 

In the lens diaphragm mechanism, a special spring (or other similar device) constantly tries to cover the aperture blades. If nothing acts on the 'jumper' (a finger or a pusher lever), for example, with a lens removed from the camera, then it succeeds, therefore, the lens removed from the camera always has a fully closed aperture. When attaching the lens to the camera, the aperture jumper rests against the diaphragm pusher, which causes the diaphragm to open completely. Thus, when the lens is attached to the camera, the diaphragm remains always open. This allows you to sight with the maximum brightness of the image in the optical viewfinder, which simplifies focusing and provides many other benefits.

When you release the shutter, or when switching to Live View, or when using depth of field preview buttons The 'pusher' moves downward, thereby forcing the lens's internal spring to close the diaphragm.

If we use a lens with a microprocessor, then the camera knows how much to lower the 'pusher' in order for the aperture to close to the desired value (the value is set via the camera menu). If we use a manual lens (without a microprocessor), then the camera lowers the 'pusher' all the way. In this case, the aperture value is controlled by the aperture ring, which allows the aperture blades to close only to the set value (but not more).

After the desired aperture value has been set and the shutter shutters have been released, the “pusher” of the aperture fulfills its full cycle - it lowers, thereby closing the aperture blades to the set value, and then rises to the stop, fully opening the aperture, returning to its original position for the next shot. The full cycle of the 'pusher' is the main trouble, because of which it is difficult to achieve aperture control when shooting video.

There are some other features with aperture closing and opening, discussions of which have moved in a separate article.

Now we come to the heart of the problem: the camera uses Live View mode when shooting video. On most Nikon cameras (but not all), when switching to this mode, the 'pusher' sets only one selected aperture value, and due to its 'cyclic' stroke it cannot move smoothly up and down and change the aperture value ... As a result, we cannot change aperture while shooting video.

Now I want to describe rather unusual features regarding the aperture control on Nikon DSLRs, which do not know how to control the aperture with microprocessor lenses when shooting video.

Many users have read more than once in my Nikon Camera Reviews about the inability to control the iris on most cameras through the camera menu when shooting video.

Some users have pointed out to me that in 'A' (Aperture Priority) mode while shooting video, you can change the F number when shooting video with Nikon amateur cameras. Attention: the F-number you see on your cameras in 'A' mode (excluding cameras with Power Aperture) is the F-number that will only be used to capture the photo. The lens blades remain in place during movie recording. This feature is misleading to many.

Conduct your own observation - on a 'G' type lens, or on a 'NON-G' type lens with a fixed aperture ring using the dedicated button, start video recording in 'A' (aperture priority) mode, turn the lens towards you and try change the aperture value using the camera selector. You will not succeed, the shooting will always take place at the same aperture value :(.

It's important: only in 'M' mode, the camera on its display shows the real F-number at which the video is being filmed.

Important: in order to force some Nikon cameras to allow controlling the shutter speed when shooting video, it is imperative to activate the 'Manual video settings' item in the 'Video settings' menu. If this is not done, then in the 'M' mode the camera will record video at the settings it considers necessary and will not show real values excerpts and the aperture on which the video is being recorded (the number F and excerpt on which the subsequent photograph will be taken). Also, if this is not done, then there will be no way to change the ISO value during video recording.

Very important: There is one trick to start video recording at a certain aperture value. You need to go to 'M' or 'A' mode, exit Live View mode, set the desired F-number, and re-enable Live View mode. Aperture in Live View will close to the set value. After that, if you click on the video recording button, video recording will start at the selected aperture value.

Due to the outdated aperture control mechanism, we have one more problem. Its essence is easiest to explain with an example:

I want to shoot a video using a camera Nikon D5300 and lens Nikon DX AF-S Nikkor 18-200mm 1: 3.5-5.6GII ED SWM VR IF Aspherical... I already know that I won't be able to control the aperture when shooting video, so I choose one value at which I will shoot video. Let it be F / 8. I put the camera in 'M' mode, turn off Live View, set F / 8, 18mm focal length and turn Live View back on and press the video recording button. But suddenly I want to shoot a video not at an 18 mm focal length, but a little closer. I start zooming to 200mm and suddenly find myself shooting at F / 13.

The spontaneous increase in the number F is explained by the fact that I used a lens with a variable aperture... The 'pusher' closed the aperture to f / 8, but when zooming, the focal length of the lens changed, but the effective aperture did not. F-number is the ratio of the focal length of the lens to the effective aperture. We increased the focal length, but the actual aperture remained fixed with the help of a 'jump rope', thus we got a 'spontaneous' increase in the F number.

When shooting a video on the TsZK Nikon, a bug sits on a bug and drives a bug. Sad but true.

But it is not all that bad. With different lenses and cameras, there may be different solutions.

'E' type lenses can be used.

An easy solution is to use lenses like 'Nikon E'. No, no, this is not the same old line of manual lenses with a lightweight body type. Nikon 100mm F2.8 SERIES E or Nikon Lens Series E 28mm 1: 2.8. ‘Nikon E'Are new, very expensive, electronically controlled aperture lenses. These lenses do not have a 'jump rope' and can be used to change the aperture while shooting video. Find the exact list of such lenses here (as many as 5 pieces). Attention: it is possible that some cameras do not know how to work with these lenses and it will be impossible to control the aperture during movie shooting. I don’t have an exact list of cameras. In the instructions for the cameras, nothing intelligible about this can be found.

Can be used manual lenses Ai AI-S, non-AI, pre-AI, Ai-converted (lenses without a microprocessor), as well as any manual lenses without a 'jumper', but with a diaphragm control ring.

Manual lenses have an aperture control ring. During video shooting, no one will forbid you to rotate the aperture control ring, thereby changing the value of F. At the same time, on all Nikon cameras that can record video, you can change the aperture value using the aperture control ring on the lens. A slight limitation of this method is due to the fact that cameras D3100, D3200, D3300, D5000, D5100, D5200, D5300, D5500, D5600, D90 (exact list) will only work in 'M' mode. Any cameras that support video recording with these lenses will only have manual focus.

You can use autofocus NON-G lenses (lenses with a microprocessor and aperture ring).

You can also control the iris on autofocus lenses with an aperture ring (NON-G type lens). With these lenses, you can manually change the aperture value during movie recording using the lens aperture ring. To do this, in the camera menu, find the item 'Adjust command dials' -> 'Set aperture' and set the value 'Aperture ring'. This function has D600, D610, D750, D800,D800E, D810, D850, D810a, D7000, D7100, D7200, D4, D4s, D5, D500 (exact list). But on the cameras D3100, D3200, D3300, D5000, D5100, D5200, D5300, D5500D5600 и D90 (exact list) such a trick will not work, since they do not have diaphragm rheostat... When attempting to use the aperture ring on these cameras, the error message 'Lock the lowest aperture ring on the lens (maximum f-number)' will be displayed.

Attention: the method described above with lenses having a microprocessor and a diaphragm ring will not work on cameras D3sD300s (verified). These two cameras do not want to enable Live View if the aperture ring is used to control the iris with the specified lens type. In the same time Nikon D3s can change the value of the number F when recording video using the selector responsible for the number F.

The disadvantage of this solution is the need to use lenses with an aperture control ring (usually these are old Nikon lenses).

There is the simplest solution to the problem for all lenses that support auto focus.

Hurrah! Cameras Nikon D800,D800E, D810, D810a, D850, D3s, D4,D4s, D750, D5, D500 (the exact list) finally learned how to control the aperture while shooting video. Aperture can be controlled using the F-number dial with any CPU lens (virtually all autofocus lenses). The easiest way to change the F number is in the 'A' and 'M' modes. For these cameras, an upgraded aperture control mechanism has been specially created that can smoothly adjust the aperture 'pusher'. I want to note that despite all the exclamations that Nikon cannot automatically change the aperture value during video recording, such a function has been and has been present since October 2009 in the camera Nikon D3s. And since September 2010, the function of changing the aperture during video recording is available when using lenses with a microprocessor and aperture ring on the camera Nikon D7000. A serious drawback of the Nikon system is that the younger cameras have no function for changing the aperture on lenses with a microprocessor during video recording.

'Power Aperture' function.

For cameras Nikon D800,D800E, D810, D810a, D850, D4, D4s, D5, D750, D500, D7500 (exact list) a function has been specially developed Power aperture... These cameras have two Live View modes - Live View for still photography and Live View for video. With such cameras, video recording can only be performed by switching to the appropriate Live View mode for video shooting. The essence of the function is that in Live View for video shooting, you can change the aperture by means of the function keys, while the aperture closes and opens very smoothly, and on the display you can observe the change in depth of field and exposure pair.

To configure these cameras:

In the 'g: Video' menu select the 'g1: Function of the' Fn 'button and set the' Aperture. with electr. (open) '. In this case, pressing the 'Fn' button will open the aperture automatically during Live View, which is for movie shooting.

In the menu 'g: Video' you can select the function 'g2: Function book. pre view. ' and set the 'Aperture. with electr. (closed) '. In this case, pressing the preview button will close the aperture automatically during Live View, which is intended for movie shooting.

Now with these two buttons you can open and close the iris in Live View, which is used for video recording. Such a focus in Live View mode for photography will not work.

Attention: When recording video, the 'Power Aperture' function for some cameras works only in Live View, which is intended for video shooting and only until the moment the video starts recording. The function does not work when recording video to a memory card, but can work when recording video to an external device using HDMI. I do not have an exact list of cameras for this feature.

Results

It is possible to control the aperture automatically when shooting video using lenses with a microprocessor (any autofocus lenses) only on cameras Nikon D800,D800E, D810, D810a, D850, D4,D4s, D750, D3s, D5, D500, D7500 (exact list). When changing the diaphragm, the controls located on the camera are used.

You can control the aperture when shooting video on NON-G type autofocus lenses (with microprocessor and aperture ring) using the aperture control ring located on the lens body, but this function is only available for cameras Nikon D800,D800E, D810, D810a, D850, D4, D4s, D5, D500, D750, D600, D610, D7000, D7100, D7200 (exact list).

On cameras D3100, D3200, D3300, D5000, D5100, D5200, D5300, D90, D5500, D5600, D300s (exact list) When using CPU lenses (any 'NON-E' type autofocus lens) aperture cannot be controlled during movie recording or requires the use of manual opticsor expensive and highly specialized optics 'E' type.

I had to dig through a bunch of information in search of some answers to the questions posed in this article. I will be grateful to the readers for the likes, the buttons for which are located just below this text. Thanks for attention. Arkady Shapoval.

Add a comment:

 

 

Comments: 102, on the subject: Aperture and video on the Nikon CZK

  • Lynx

    Comments nibudid!
    “Guessed all the letters, could not read the word” (c) anecdote approx.

    • Anatoly

      similarly))

      • Dmitry K

        there will be no comments for you. The question is sickly surfaced)))

  • Dmitry K

    yeah, the work has been colossal ... Thanks to this article, for the first time I tried the video on my camera and made sure that I didn't touch it for nothing))))) For three hundred, it's a shame, a professional camera from the times of d3s, there is a rheostat, but no video. Well, to hell with it, I still don't use it.
    I’m thinking - maybe Nikon quietly “teaches” new cameras to control the aperture in E lenses, and then, when the last unlearned camera expires, the off-support period expires, he will say “basta, then we make lenses without a jump rope - throw out your old cameras” And then another years later heels and control levers will be removed from the cameras by transferring everything to AF-S, E lenses

    • Dmitry K

      suddenly a thought came. What if Nikon Df is not a camera for profit, but to test the waters - how many people are sitting with old stuff in a wardrobe trunk, in principle, do not need a video? judging by the failure of sales - not much. But this is so, as a thought joke))))

      • Lynx

        Given the cost of this df - as if not in the absence of a video failure.
        and not to say that df is a direct failure.

      • Andrii

        When I saw Df, I immediately fell in love !!!! she is gorgeous!!! she has no flaws! she's just brilliant !!! but I'm not a rich person, I can't even afford some normal new glass, so Df remains only in dreams ...

  • Oleg

    And the recording in the video is still accelerated, but not slowed down, thanks for the article, informative.

    • Arkady Shapoval

      Fixed

  • anonym

    ... Cinema lenses (eg from Zeiss) allow you to adjust the effective aperture. The optical (effective) aperture differs from the actual lens aperture in that it depends on the diameter of the group of light rays passing through the lens, and not on the actual diameter of the lens. That is, it is calculated taking into account the transmitted light, and not the physical size of the "hole". For video filming - an important parameter ...
    Here is a good theoretical article on optics - http://www.photoline.ru/theory/lens.htm

    There is also such an interesting thing - Anamorphic / Anamorphic lenses. They allow you to shoot widescreen films with a 35 mm camera. http://evtifeev.com/9027-anamorfnyie-obektivyi.html

    • Oleg (not the one, the other)

      And what does this have to do with Shapoval's article?

      • Dmitry K

        hell knows, but about anamorphic lenses och informative. Why, interestingly, they are not used by Nikonokanons and Sonya - it costs 5 kopecks to put a program for interpolation into a carcass, and Photoshop has long been able to interpolate to the desired size in equal terms - all you need is to put such a function on a car when loading a photo from such a lens

        • Eugene o

          What's the point? What was still in some demand on film does not make any sense on the mirror, because excess information can always be cut off on post-production.

  • Oleg

    After the desired aperture value has been set and the shutter shutters have been released, the 'pusher' of the aperture fulfills its full cycle - it goes all the way down, causing the aperture blades to completely close, and then rises to the stop, fully opening the aperture and returns to its original position for the next shot. The full cycle of the 'pusher' is the main trouble, because of which it is difficult to achieve aperture control when shooting video.

    This is some kind of nonsense))) the pusher always drops to the end, but there is no spring on the lens, it depends on the set aperture value. if I set the aperture to 1,4, then the petals do not close before or after shooting

    • Oleg

      Although it can with a connected lens D version, the fitting does not completely drop.

      • Arkady Shapoval

        Try it, and also describe what you checked on what, so already unsubscribe “for some kind of nonsense”.

        • Yarkiya

          After the desired aperture value has been set and the shutter shutters have been released, the 'pusher' of the aperture fulfills its full cycle - it goes all the way down, forcing the aperture blades to completely (to the set value) and then rises to the stop, fully opening the aperture returning to the starting position for the next shot. The full cycle of the 'pusher' is the main trouble, because of which it is difficult to achieve aperture control when shooting video.

          I beg your pardon, I edged the phrase a little, for better digestibility, otherwise some swear “nonsense”.

          • Arkady Shapoval

            Fixed The question about the complete closure after the exposure is put up for discussion.
            On Nikon D700, D80, D5300 cameras with 18-200, 35-70 / 3,3-4,5 aF, 80-200 / 2.8D AF, 28-105 / 3.5-4.5 and 35 / 1,8 lenses, I observe the situation is that when shooting at a fully open aperture, it closes and opens again after the return of the curtains and mirrors. Previously, I described the assumption that the diaphragm closes to a minimum, practicing a standard cycle.

      • Oleg

        I checked it at 50 1,4D - I set the aperture to 1,4, when the descent the petals do not close at all, nor before not after. The aperture on the lens itself is set to 16. Therefore, the jump rope does not go down at all. with aperture of 8, for example, it will go down exactly as much as needed, and will return back, and not all the way down

        • Arkady Shapoval

          I also checked on all my cameras.

          • Oleg

            and? during the descent, the petals completely close at any aperture value ??

            • Arkady Shapoval

              Yes, I checked on all lenses and cameras. This statement in the article called into question with a description of the situation. I am waiting for an intelligible answer.

              • Oleg

                with a diaphragm of 1,4 I see through the lenses only as the mirror rises, but the petals do not hide behind even a millimeter

              • Oleg

                How can the diaphragm completely close barely ??

              • Arkady Shapoval

                I can fend off, here is a link to the archive from the video shot on D80 + 35 / 1,8zh on F / 1.8, https://cloud.mail.ru/public/6bc0da6b6eaa/DSC_2898.rar The video clearly shows how the petals close. About barely noticeable - it is difficult to determine by eye, look yourself in my video, just through time you can see that completely closing diaphragm, which is only cut off due to the speed of operation.

            • Lynx

              on g-series lenses, and even on the old helios 81H - yes.

              • Arkady Shapoval

                on my 80-200 this is barely noticeable, if you do not peer much, you may not notice it. The rest of the lens, which I indicated above, clearly shows the closing / full closing / opening of the aperture when shooting at fully open or covered.

            • Lynx

              although I'm lying about helios ... there the diaphragm lock does not allow to close more.

              • Oleg

                http://www.ex.ua/677936298489 I shot a video on a phone of poor quality, but that’s not the point. It is clearly seen how at 1,4 the petals do not move at all, with f2 they are slightly covered, well, not at all until the end!
                Nikon 7100 + Nikkor 50 1.4D

              • Arkady Shapoval

                Here is from lenses with aperture ring - https://cloud.mail.ru/public/8155fa8f5466/DSC_2897.rar same effect. Black magic.

  • Oleg

    Hooray! Nikon D800, D800E, D810, D3s, D4, D4s, D750 cameras (exact list) finally learned how to control the aperture during video shooting - But what about the d90?

    • Arkady Shapoval

      And for d90, the article also says.

      • Oleg

        It says that you can change with manual ones, but in fact, in A mode and with af-s lens, you can change the aperture with the wheel during shooting

        • Arkady Shapoval

          Well, of course you can, but as described in the article, you do not set the current aperture for shooting the video, smoothly changing it, but set the number F, which will be used to obtain the next photograph.

          • Yarkiya

            I don’t understand something, I drove the camera on video (d7100) and af-s 35mm 1.8 and 105mm 2.8 glasses specially with different lenses, well, they didn’t react like a diaphragm to any wheel. All that the camera allowed me to change during the shooting was the focus modes, (by the way, some unknown af-f mode appeared) expocorrection (by changing the number of ISOs), and you can turn on the virtual horizon or grid on the screen.

            • Oleg

              yes this is my cant) believed a friend who said that F changes when recording .. in fact, here Arkady is right

            • Arkady Shapoval

              Well, the d7100 should not change the aperture with G lenses when shooting video, the article clearly says about this.

  • Dmitry K

    about closing to the end. The experiment was put on a d300s and a non-motorized fifty-ruble and a motorized 35 1.8 dx. The result - if you shoot a photo completely open, the petals do not twitch at all on both lenses. If the F value differs from the open one (at least 2.0, at least 8.0), then the aperture after exposure should blink to a minimum. At 2.0, this can be seen well - the petals need to go a lot to a value of 16 and back. On F 8 you can hardly see the path from 8 to 16 is very small.
    The conclusion is this - if you shoot in the open, then the lever probably does not move at all (and you really need to fuck it), but if you shoot in the closed position, then the lever presses on the jumper with the same force at any aperture, but something (lens processor? Camera processor? and how?) limits it to the desired F value for the duration of the exposure. Then this restriction is removed and the petals are folded under the action of the spring to the minimum value. At this time, the lever is cocked and returns the petals to the open position.
    Probably it works like this, another reason to close but I do not see a minimum

    • Arkady Shapoval

      Here is the same 35 1.8G on a fully open https://cloud.mail.ru/public/6bc0da6b6eaa/DSC_2898.rar + can be heard even on the open sound of the lever.

      • Jury

        In M mode the shutter speed is set to 2 s, the operation of the aperture will be clearly visible - no need to look closely at what value it closes

    • Jury

      checked on D3200 and Sigma 17-70 (without aperture ring), on fully open - the diaphragm does not move at all, on closed ones - it closes to the set value and does not blink to a minimum

    • Yarkiya

      At 7100, this does not happen, neither when shooting video, nor photos, nor with manual, nor with aphs. He took Helios 81 and 35 1.8, drove this way and that, closes it only to the set value and again returns to the open one.

      • Arkady Shapoval

        then it depends on the camera. Perhaps if my d80 closes, but the d90 / d7100 does not close, then this is due to the Live View that they have, which means it depends on the model of the camera. On the other hand, the d5300 on the same 35 1.8 and my other lenses also closes completely against the open one (I give you a tooth, everything is exactly the same as in the added video to the article). Therefore, the theory of Live View does not work. Any ideas?

        • Jury

          You need to follow a simple logical path - you have 3 devices of different years of manufacture, from the "old" d80 to the new 5300, all - it closes the same way, On my 3200 and Evgenia 7100 - it does not close, although they are no newer than 5300 and no older than d80. The reason may need to be looked for in the camera settings. they are made by the same person. To understand now - which of the settings includes this bug. In c5pro I could not understand why in modes M and A I can not control the aperture from the camera, at one time :)

          • Arkady Shapoval

            Tomorrow I’ll take care of and describe in detail the symptoms of all cameras with all available lenses in as much detail as possible. Personally, I am now more concerned with this question than controlling the iris when shooting a video :).

            • Yarkiya

              And what does this give us, well, apart from “in order to improve education”?

              • Jury

                If every time the diaphragm is closed completely, the resource of the mechanism will decrease, even when you shoot it open. It makes no sense to pull the diaphragm to 16-32 each time.

          • Lynx

            How did you manage to control the diaphragm on the Fujik? O_o

        • Jury

          can reset to factory settings 5300? and try again?

          • Arkady Shapoval

            I reset the settings, on d80, d5300 in p, a, s, m mode, the aperture at 35 1.8g at 1.8 still closes, at d700 it remains stationary. Something is clearing up.

            • Jury

              I put it at 3200 50 1,8zh - it does not move on open, on closed ones it closes only up to the set value. Interesting, I think that tomorrow you will tell us the answer :)

        • Lynx

          The difference in firmware is possible, but technically introduced in the edax d7000 models

    • Oleg

      I threw off the video where I shot on the cover, they close exactly as much as set, no more

  • Alex

    The daughter is studying to be a director. I disassembled the manual 135 mm and pulled out the spring that fixes the aperture (the one that locks the aperture at a certain value), and got a great way to change the aperture in the scene (the aperture ring rotates without a “click” and if you do it carefully - the automation has time to rebuild the shutter speed without visible jerks "). You can get very interesting shots.

  • zengarden

    As an option - use a fully manual lens and rotate the aperture manually :)

    • Arkady Shapoval

      Well, I described it as “You can use manual lenses Ai, AI-S, non-AI, pre-AI, Ai-converted (lenses without a microprocessor), as well as any manual lenses without a 'jumper', but with a diaphragm control ring . "

  • Dmitry K

    thought such. In Lightroom and Photoshop, some lenses in the “max aperture” column have funny numbers like 1.74 instead of 1.8. So that's it. maybe some cameras think that 1.8 is not the maximum aperture for them and pull this notorious jump rope with all the ensuing consequences. And some forget about this insignificant difference and do not pull the jump rope. Then there is the question of the firmware and the release date of the camera.

    • Arkady Shapoval

      But on the camera, these numbers are equal to the whole '1.8', etc. and pull it until it closes completely for no reason.

  • Dmitry K

    Well, or as an option. On some cameras, the shutter mechanism is somehow tied to the diaphragm leash and the whole process is inextricable. But on others, the diaphragm and shutter are delimited. Here on the d700, the mirror and the shutter work together - maybe here, too, like that scheme

  • Sashko D3s

    Arkady, honestly, I do not want to argue, but:
    Conducted his experiment
    1. Carcass D3s + Nikkor 50mm f1.4G at aperture 2.8
    2. Carcass D300s + Nikkor 50mm f1.4G at aperture 2.8
    3. D5100 + Nikkor 50mm f1.4G carcass at 2.8 aperture
    In no case does the aperture close before f22 and do the full cycle as you said.
    That is, when taking a picture of a frame, it evenly closes to 2.8 and opens back to 1.4.
    I tried in single-frame (S) mode, and in serial (Cl), and in Q (silent shooting).
    The result is the same everywhere, I do not observe any cyclical closure to f22.
    I even tried to set the focus in M ​​and M / A, it did not help. The aperture closes exactly to 2.8 only.

  • sergey

    Hello, fotik d5100 lens 55-300 to 55 diaph. 4.5 it doesn’t close but I see how it twitches for half a meter (towards closing) but it doesn’t close I checked the shutter speed several times and set it to 1c so that it could be seen on the diaphragm. 5.6 hides and opens, there is no full closure, well, at 22 it completely closes.
    as for the video, there’s nothing to control directly, I can’t help not shutter speed not the ISO and the aperture in no mode,
    1: what do I do in mode A or M before turning on the live view I set the desired aperture,
    2: in order to see the real ISO with which shooting is taking place, in the auto ISO settings you need to set the maximum value to 6400, if, for example, set the auto ISO settings to 400, then when shooting it will show from 100 to 400 and 1600 can shoot and the camera doesn’t will show
    3: after the aperture is set, the camera seeks to choose the shutter speed so that the shutter speed is 1/30 and only if it is too light then it reduces the shutter speed because it cannot do less than 100,
    4: since the camera does not allow you to control the video (on d5100) when playing video, you can change the shutter speed by playing with the aperture (although this is extremely inconvenient since you have to go out and go into live view again), but you can lock the exposure pair with the button, but during refocusing the lock is lost you can drive the expo correction to increase or decrease the exposure like everything wrote

  • Igor

    If I were writing this article now, I would call it “WHY I CHANGED MY D3100 FOR CANON”)

  • Dmitry K

    Amendment. Last night I foolishly thought that the diaphragm after exposure blinks to a minimum - this is not true (although it seemed so). After viewing the camera for 2 minutes in burst mode (poor shutter), I came to the conclusion that on d300s in motor and non-motorized lenses, the petals do not twitch at all on the open one, but on the closed one they twitch to the desired value and back without closing to a minimum. I apologize for misleading - at night what will not seem. The case is small - find out the reason for blinking from Arkady))

  • Oleg

    Maybe it's in the firmware? it closed on the old ones, then we realized that it spoils the lens once again and redid it?

    • Arkady Shapoval

      5300 is one of the newest and also closes.

  • Sergei

    D5100- does not close
    D810- does not close
    It is seen through the lens how the mirror moves

  • Sergei

    On your video DSC_2898.MOV you can see that the closure is not the same, most likely - a malfunction of the jump rope in the camera

    • Oleg

      maybe this is so because of the small number of frames when shooting?

    • Arkady Shapoval

      it only seems so because of fast movement.

      • Sergei

        I insist that this is a malfunction

    • Lynx

      dragging is just a nonsynchronous shooting frame.

  • Andrei

    D300 + 28-105 3,5-4,5 - all yak maє buti, curving the displayed value

  • sergey

    while everyone is busy investigating the behavior of the diaphragm everyone has forgotten about the video, there is no normal way to control all the settings for exposure (ISO shutter speed) just because Nikon just got a big bolt on it and there aren’t any physical restrictions on the 21st century courtyard

    • Arkady Shapoval

      The discussion of the behavior of the diaphragm has moved to a separate corner at this address - https://radojuva.com.ua/2014/11/nikon-aperture-wtf/.

      I ask in this thread to touch only topics related to the video, as dear sergey did.

      • Dmitry K

        Phahaha! The topic about the features of the diaphragm has an awesome address. It's a pity you can't put “?!” at the end of the page title

        • Arkady Shapoval

          I did my best :)

  • Sandy

    Arkady, I’m completely insolent, since you have touched on the topic of the video, but will there be a review of how things are with the video on canon on standard and custom firmware (magic lantern) :)
    It is available in 1100d with ML (the purpose of installing a zebra and picking, I can give it for a test), but since it’s never an operator, and the 1100d video had it anyway, I didn’t figure it out in all the videos, I’m interested in your opinion.
    ps. third line from the end, an error in the word "information". Thanks for the great reviews.

  • Vic

    About lenses with variable aperture. The manual for the Canon 600D says:
    “If you are using a lens whose maximum exposure changes when using the zoom, you should not use the zoom when shooting movies. Exposure changes can be recorded. ”

  • Igor

    I want to add my “three kopecks” ... I have D300s. I read the article five times. Well, I dabbled with different camera settings, put different lenses, looked inward.))) Spent the whole evening. So the aperture on the D300s in the video shooting mode (Live View) is automatically selected by the camera, regardless of the shooting mode and what aperture was set before Live View and video were turned on, and does not automatically change during shooting, regardless of the lighting or focal length. But you can control the aperture during shooting only with a ring of non-autofocus lenses (without a microprocessor) and (in this case, I used 80-200 / 2.8D) on the so-called autofocus NON-G type lenses (with a microprocessor and aperture ring), if after turning on Live View (in mode M or A, no difference), leave enabled in the MENU the aperture control mode “using the sub-command dial”, then point the lens at a bright light source or just into the sky and press the exposure metering with the shutter button (for example) and immediately turn on the video mode, then the aperture will automatically be set to the most closed “hole”, and then simply rotate the aperture control dial on the lens and change it manually nuyu. (If the disk is locked, then unlock it by releasing the “Lock” lock. So on D300s with NON-G type lenses you can manually change the aperture. The article says that on the D300s, as well as on the D3xxx-D5xxx models, it is not possible to control the aperture. Perhaps not all autofocus is controlled ...

    • Arkady Shapoval

      If the aperture control function is assigned to the camera’s disk, and you rotate the disk on the lens, the camera can continue to shoot video, but after that it will produce a fEE error and, in theory, this cannot be done.

  • anonym

    On the d750 and the Helios lens in general, video recording refuses to turn on. Can you tell me how to defeat this or why such crap?

  • R'RёS,R ° F "RёR№

    You have a very good blog, informative and you write honestly, without PR. Thank you for your hard work. I sat on Sony Alpha for 5 years (I don't believe in Nexes and E-bayonet in principle), left it for one reason only, the alpha did not allow me to open the aperture more than 3.5 when recording video, and in conjunction with the software ISO limit of 3200 (camera a37) last year I could not record from a tripod on a trip to Turkey a holiday that took place in a completely dark hall (dancing with lights, etc.). And this fact served as a point of no return .. make bellive as they say, for… l. Then there was canon 6d - a very good camera and the best in general among all cameras in terms of noise among all systems (with the exception of probably Sony a7s, and that is not a fact), but it also had drawbacks, although the majik latern slightly corrected the situation. I decided to go to nikon, and in particular to d750 because of its rotary screen, which I missed so much on kenon and because of the separate settings for video and photos. However, the presence of an anti-aliasing filter both in it and in the 600,610,800th nikons stops me now, not to mention the problems with bb, slow focus and serial shooting. But what finished off was the inability to control the diaphragm ... Thank you for the info, otherwise I would have bought it and would have been disappointed .. In fact, there are only a few options left (I don’t want mark 5, I want wide and sharp dd) - these are: 800s 2012 release , which stands for a hundred square meters, 810 - from 170tyr, or I began to look at fujiki (x-t1, x-t10), but they have problems with sharpness even on ISO 200. I am an amateur, and I do not have a budget for top optics and cameras, now without a camera at all, and there is a maximum of 1-2 weeks left for the purchase (the wife will give birth soon). Here's hz - what to do. Now everything has risen in price, and the budget for a camera with a pair of glasses of 100-120 sput is not enough for me now for anything decent, but earlier it would have been enough with my head.

    • Arkady Shapoval

      Duck d750 can control the diaphragm during video shooting, but this is indicated in the article.

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