Overview of the KONICA HEXANON AR 40mm 40mm F1.8 (40 / 1.8) lens, adapted for Canon EF, especially for Radozhiva, prepared Rodion Eshmakov.
Lens Specifications:
Focal Length: 40mm
Relative Hole: 1: 1.8
Optical design: 6 elements in 5 groups, Planar (see picture)
Aperture: 6 blades
MDF: 0.45 m
Filter thread: 55 mm
Mount: Konica AR, not compatible with SLR cameras
Features: catches a mirror on modern full-frame SLR cameras.
Features of adaptation and construct Konica Hexanon 40 / 1.8
Hexanon 40 / 1.8 is a standard pancake lens for Konica SLR film cameras with AR mount. Unfortunately, without adaptation with SLR cameras, it is incompatible due to the small working distance.
Alteration of this lens is most easily carried out on the Canon EF - due to the smallest working segment among the modern SLR cameras and the large diameter of the mount.
The adaptation of the lens is to maximize the drowning of the lens block, combined with the inside of the helicoid, deep into the camera; subsequent aperture control output and bayonet replacement. For more or less accurate alteration, turning work is required, and the alteration itself is generally quite difficult. Therefore, not so often the lens can be found adapted for SLR cameras.
Adaptation Procedure in the Best Way described by Igor Stratienko.
In my version, the diaphragm control ring was replaced, and the ring with the depth of field scale was saved. The result is such a pancake:
The Hexanon 40 / 1.8 is a very small lens due to its non-retrofocus optical design. The dimensions also affected the ergonomics of the lens. For example, with such dimensions, the course of the helicoid is very limited - therefore, the MDF is 0.45 m, which is not the best indicator for such a focal length. Mir-1A 37 / 2.8, for example, has MDF of only 0.24 m. The angle of rotation of the focusing ring is small - a little less than 180 degrees. However, focusing with the lens is fairly easy.
Hexanon 40 / 1.8 has nice little things like a rubberized focus ring, distance scale in feet and meters, the depth of field scale (which is of little relevance when used with digital cameras) and an IR shift mark. It's funny that such a compact lens uses seemingly large filters with a diameter of 55 mm.
The most important drawback of the lens is a protruding convex rear lens, which prevents the use of the lens on a full-frame CZK. In addition, this forces you to always keep the lens with the back cover to avoid damage to the rear lens.
The front lens of the lens is also not structurally protected and easily collects dust and fingerprints (the focus ring is narrow and sometimes free fingers fly onto the front of the lens), therefore it is recommended to use protective filters.
The lens has 6 blades of matte rounded diaphragms, therefore, at first, when closing, you can observe the "circular saws", and then - "nuts" from point light sources in the bokeh.
About Konica 40 / 1.8, it can be said that the lens is designed simply, reliably and almost artlessly, unlike its Japanese counterparts. However, at the same time, its alteration is an extremely difficult task.
Optical properties
Optically, the lens is quite unique - with such dimensions and a small focal length, it has a very large aperture - F / 1.8. This means that it is 2 times (and even a little more) lighter than Canon 40 / 2.8 STM or Mir-1 37 / 2.8. The extra stop of aperture is a very good advantage, which has helped me more than once when shooting with this lens. An even greater plus is the small FR, which makes the lens on crop cameras close to the standard one in terms of the angle of field of view.
F / 1.8 in Konica Hexanon 40 / 1.8 can be described as conditionally working: the lens suffers from spherical and chromatic aberrations, the sharpness is satisfactory in the center of the frame. Starting from ~ F / 2.8, the lens becomes very sharp in the center, and from F / 4, the edges in my frame are in order. Canon 600D.
The contrast of the lens is good, it has no particular tendency to catch hares (which significantly distinguishes it from retro-focus lenses). The color rendition is correct.
The bokeh lens, in my opinion, is doubtful: not having special properties at medium distances, it tends to turn into an unpleasant and sharp at small distances. The out-of-focus circle in the center of the frame has a green-yellow hue, a bright edging, at the edge of the frame their appearance changes slightly - they only become a little more “triangular” (with the base towards the center of the frame) due to a coma. Around F / 2.5, the picture maintains a nice balance between quality and artistry. I used the lens mainly in the F / 2-F / 2.8 range for shooting people, F / 5.6-F / 8 for architecture.
In general, the optical quality of Konica 40 / 1.8 is not satisfactory, with the exception of working on an open diaphragm.
Conclusions
Konica Hexanon 40 / 1.8 - a high-quality “wide” fast pancake for every day, an excellent “workhorse”. Adapting it for SLR cameras is quite complicated, but it is on them that its advantages are revealed. For mirrorless cameras, you can pick up more interesting options.
Thank you for your attention, Eshmakov Rodion.
You will find more reviews from readers of Radozhiva here.
yes a really cool lens.
A beautiful lens with a beautiful design. Pretty sharp.
I have such; Mirrorless crop is much nicer than fifty dollars.
As for the bokeh: yes, against a motley background, not really, but it depends on the distance to the subject and the background.
How can I insert a photo? there used to be an opportunity, now not ...
I’m not sure that it will turn out so to upload a photo ...
http://i.piccy.info/i9/8cb9a06c7498b01dbf72562dc45ba104/1520961482/529247/1228900/4599.jpg
http://i.piccy.info/i9/6f100fec0311cff9b5caa1be6d3cee77/1520961560/283366/1228900/4620.jpg
Cute cat)
And I like fifty dollars a lot more. I use fifty dollars on Fujik and very often, 40 mm lies and I put very, very rarely
Cool review! Thanks Rodion!
Thanks for the interesting review! I always admire people capable of such alterations of optics!
Good pictures and glass interesting!
Rodion, thanks, was curious to read.
PS
We are waiting for the promised review of Enjinho 28-70 / 2.6 from you.
If possible, on any available ff carcass.
Sorry, but I did not promise any review of engenzhe. And there is no carcass of FF and never will be.
Oh, oops.
Confused you with another author who wrote a review on SMC Pentax-DA 1: 3.5-5.6 18-135mm ED AL [IF] DC WR.
I apologize :)
Absolutely soapy something. Only on a well-clamped hole is more or less acceptable. Thanks for the review!
Gorgeous glass! On open draws a beautiful picture!
Zgadzam się tutaj w mieście z A7 😉https://www.flickr.com/photos/198228657@N02/albums/72177720307990299
Cool lens, but Canon's 18MP sensor, cropped, does not reveal its capabilities in any way, alas ...
I really liked the photos, the bokeh is unusual and interesting! Thanks for the review.
If you are interested in purchasing this copy - write: rudzil@yandex.ru
Perhaps this lens put on nikon D 7000.
The lens is really compact, when mounted on the UPC it turns out to be 50mm with an adapter. An unpleasant feature is the absence of a half-stop between 1.8 and 2.8 - the ring can be set to some intermediate position, but when reinstalling, it will no longer be possible to hit exactly the same diaphragm. Not that this is often necessary, but you should be aware of it.
Here they talked about insufficient sharpness at 1.8, so this is not entirely true. Perhaps this is a feature of my particular specimen, but the difference between 2.8 and 1.8 is more likely in the reinforcement of HA, which greatly blur the outline.
In fact, guys, it's very strange that the theme of Konika has not been dispersed on the site for all previous years ...
Very sorry.
By the way, the model described above shoots very, very well on a x2 crop in 4k on Panasonic. 80 millimeters on the conditional floor of the foot - and mechanically this is done in half an hour, subject to the availability of instrument standards and an understanding of the process as a whole - that is, conditionally in the middle between 1.8 and 2.8, the sharpness is already working, at 2.8 unconditional along the working border of the frame, then closer to four and higher on the installation, it is already necessary to somehow stock the female face))).
Mechanics for 5+,
Assembly for 5+,
Ease of assembly disassembly for cleaning and others there too.
What else is needed?
About using it on a fulk with Sony - well, such a thing, kanesh. 40 as be neither here nor there. Again, I'm talking about the video.
About Konik in general. Their cameras, in general, were one continuous piece of shit, film, solid hemorrhoids, sometimes it sticks there, sometimes it closes there.
But in terms of optics, that's why they were the standard of the Japanese optical industry for many years. From the heart.
Frankly, I didn’t see bad ones, and there weren’t very many of them released.