According provided by lens Nikon AF-S Nikkor 20mm 1: 1.8G ED N (Nano Crystal Coat SWM RF ED Aspherical) huge thanks to Boris Kolomoits. The Radozhiv site exists precisely thanks to such readers! Previously, Boris has already sent an interesting lens for review. Nikon ED AF-S Nikkor 300mm 1: 4D IF Silent Wave Motor.
- In short
- Main Specifications
- Image quality
- Sample photos with sources on D750, D700, D3200 and D40
- My experience
- All original similar lenses
- User Comments
- Add your review / comment or question on the lens
Lens Nikon AF-S Nikkor 20mm 1: 1.8G ED N (Nano Crystal Coat SWM RF ED Aspherical) in this review I will call it for short - Nikon 20 / 1.8G.
Nikon 20 / 1.8G is a very serious update from the outdated Nikon AF Nikkor 20mm 1: 2.8D.
Nikon 20 / 1.8G belongs to professional solutions. The Nikon 20 / 1.8G has few obvious drawbacks. Nikon 20 / 1.8G turned out to be very successful and deserves due attention.
Nikon 20 / 1.8G was presented 12 September 2014 year and became a replacement for the older Nikon AF Nikkor 20mm 1: 2.8D, presented back in March 1994. At the same time Nikon AF Nikkor 20mm 1: 2.8D is an almost complete copy of the older Nikon AF Nikkor 20mm 1: 2.8 [NON-D], introduced back in 1989.
You can also assume that the Nikon 20 / 1.8G actually belongs to a radically new line of lenses that have significantly improved their performance over their predecessors.
Nikon AF-S Nikkor 20mm 1: 1.8G ED N Main Specifications:
|Review Instance Name||Gold lettering 'Nikon AF-S Nikkor 20mm 1: 1.8G ED N' on the body.
White lettering on body 'Nikon Nano Crystal Coat SWM RF ED Aspherical Ø77 Made in China + Serial Number'
|Front Filter Diameter||77 mm, plastic thread for filters|
|Focal length||20 mm, the EGF for Nikon DX cameras is 30 mm|
|Zoom ratio||1X (this is a prime lens, a discrete prime lens)|
|Designed by||for digital cameras Nikon FX|
|Number of aperture blades||7 rounded petals|
|Diaphragm||from f / 1.8 to f / 16. The lens is deprived of the aperture control ring, control is via the camera menu (G - lens type)|
|MDF (Minimum Focus Distance)||0.2 meters, maximum magnification ratio 1:4.35|
|Stabilizer features||there is no built-in stabilizer, it is possible to use a stabilizer in cameras Nikon Z|
|Optical design||13 elements in 11 groups, including
|Lens hood||Nikon HB-72, bayonet type, plastic|
|Transportation||With a soft cover CL-1015|
|Manufacturer country||China, inscription on the lens: “MADE IN CHINA”|
|Period||From September 12, 2014 to the present day (at least until summer 2020)|
F / 2.8 maximum aperture used in the previous model Nikon AF Nikkor 20mm 1: 2.8D, 1 1/3 darker than the f / 1.8 used in this lens.
The Nikon 20 / 1.8G is pleasant to the touch. The lens body is made of plastic, the Nikon 20 / 1.8G weighs only 350 grams. But the light weight and plastic body sometimes gives the feeling of an inexpensive solution. In addition, if you shake the lens slightly, you can clearly hear how something dangles inside... This is the norm and is not a breakdown.
The focusing ring is very wide and rubberized. Nikon 20 / 1.8G uses metal mountnear which is located rubber compressorthat protects the camera mount from dust and moisture. Nikon 20 / 1.8G is made in China only.
There is a bayonet mount mark on the body and a mark for quick installation of the hood. The lens uses a small plastic hood HB-72, which is fixed in special grooves located near the front lens of the lens. A hood is included with the lens. The hood can be installed in the opposite direction for transportation. In this position, access to the focusing ring is partially lost.
Nikon 20 / 1.8G comes in a small cardboard box with characteristic Nikon coloring. The lens is held in the box using a special plastic box-holder.
Diaphragm lens consists of 7 rounded petalswhich form a fairly flat opening at all apertures.
Nikon 20 / 1.8G belongs to professional lenses. As befits a professional lens - the diameter of the front filter is the classic 77 mm.
Nikon 20 / 1.8G focuses thanks to 'SWM'-motor (Silent Wbird Motor is a quiet wave / ultrasonic focus motor) and refers to 'type lensesAF-S'(with built-in motor focusing), and therefore it will automatically focus on any Nikon digital SLR camera. The lens is used compact swm motor.
The lens will automatically focus on all Nikon DSLR cameraseven on amateur series models Nikon DXthat do not have a built-in focus motor: D40, D40x, D60, D3000, D3100, D3200, D3300, D3400, D3500, D5000, D5100, D5200, D5300, D5500, D5600as well as mirrorless cameras Nikon Z using the FTZ adapter.
During auto focus, the motor does its job quietly enough, but still noise from the focus motor is clearly audible in videos recorded using the camera's built-in microphone.
Auto Focus Speed - high... The running time of lenses from infinity to MDF and back is short.
There are no special problems with focusing, but on my cameras I noticed rare focusing errors, there are few of them, but they still make themselves felt. I associate them with the difficulty of focusing on an ultra-wide angle lens with high aperture... But overall, the lens focuses quickly and confidently.
The front lens remains stationary during focusing. The lens uses focusing type RF (Rear Focusing), which is done by moving the rear lens group. For practical use, the RF type focusing is no different from the IF ('Internal Focus' - 'Inner Focus'). With this lens, you can easily use any filters, for example, polarizing.
The minimum focusing distance is only 20 cm, while you can shoot with a maximum magnification of 1: 4.35... This is an excellent indicator for a lens like this. An ultra-wide angle of view paired with a small MDF helps to create photos with an interesting wide perspective effect.
During auto focus, the focus ring remains stationary. In manual focus mode, the ring rotates approximately 90 degrees, when the extreme positions are reached, it does not rest, but continues to slide, without affecting the focusing. It is quite difficult to focus manually.
On the lens housing you can find focus switch 'M / A - M'. In the 'M / A' position, auto focus works with constant manual focus priority. The 'M / A' mode is very convenient and useful - for manual focusing or focus correction, you do not need to additionally switch the lens to the 'M' mode.
- There is a depth of field scale, but only for F / 16
- There is a fairly strong 'Focus Breathing' effect (changes in the angle of view during focusing). When focusing towards MDF, the angle of view decreases
- The lens has a scale with a focusing distance in meters and feet in the form of a window. There are values only for the infinity mark, 0.4, 0.25, 0.2 meters. In fact, this scale is useless.
- The Nikon 20 / 1.8G does not have a hard infinity mechanical stop for fast and accurate infinity aiming under any operating temperature.
- Focus Shift (shift focus, changing the focus distance due to iris) is missing.
- The lens must be well compatible with the Nikon FTZ adapter for Nikon Z mirrorless cameras and with a Nikon FT1 adapter for cameras Nikon 1
- When used on cameras Nikon D3200, D40, D700, the green dot confirming correct focusing is working correctly.
The lens was developed at a time when there were already 36 MP Full Frame cameras and APS-C cameras with a 24 MP sensor, and therefore the Nikon 20 / 1.8G should not have any problems with modern high pixel density sensors.
The lens frankly surprised at 24 APS-C sensor Nikon D3200 (CMOS, 24 MP), where already at F / 1.8 in the center of the frame it created a very sharp image. On camera Nikon D700 with a low pixel density Nikon 20 / 1.8G is simply gorgeous in terms of sharpness.
- confident sharpness at the open aperture in the center of the frame
- very high resolution at f / 2.8-f / 8
- there is a drop in sharpness in the corners of the frame at F / 1.8, when closing to F / 2.8, sharpness returns to normal
- small distortion
- the overall level of distortion is at a level typical for such high-quality lenses
- the nature of the distortion is unified - the usual barrel-shaped distortion, can be easily corrected in the editor
- the overall level of vignetting is at a level typical for such lenses
- vignetting is strongest when focusing to infinity at open apertures
- vignetting is easily fixable in the editor
- vignetting is almost unchanged using two light filters, I tried Hoya Pro1 Digital 77mm MC UV (0) made in Japan + cheap Citiwide CPL 77mm
- in the backlight, you can get large glare (Example 1, Example 2), but if you choose the right angle, then this can be avoided. Even if the lens catches glare, the overall contrast is high.
- getting the effect of a 14-ray star is quite simple (example)
- sometimes you can get neutral and even pleasant bokeh
- the disks of confusion have concentric 'onion' circles from aspherical optical elements
Modern Nikon cameras, which were released after the announcement of this lens, easily automatically correct distortion and vignetting. Many cameras are able to automatically correct some of the chromatic aberrations. Sometimes software features that enhance the original lens image can work wonders.
If a camera that was released before 2014 is used with this lens, then shooting in RAW with the further use of the latest version of Capture NX-D or any other original modern utility allows you to automatically correct vignetting, distortion, and chromatic aberration.
Sample photos of D700
Original RAW photos (12-bit '.NEF') can be download from this link (25 files, 250 MB).
Sample photos of D3200
Examples on Nikon D3200, APS-C 24 MP with AA filter. Examples are shown without treatment... Easily convert original RAW files with the original Nikon Capture NX-D v 1.4.6 utility. All photos were taken with a lens hood. Some of the photos (where there is no backlight) were taken using protective filter Hoya Pro1 Digital 77mm MC UV (0) made in Japan.
- Picture Control mode: SD (Standard with default settings, 3, 0, 0, 0, 0)
- White balance: Auto (with default offset)
- Active D-lighting: ON (the camera does not allow you to select a level ADL)
- Noise reduction: OFF (camera does not allow you to select the intensity level of noise reduction)
- use of the function 'Aut. distortion control 'with this lens on the camera Nikon D3200 unavailable, apparently the lens came out after the announcement of this camera and there is no data in its memory for distortion control. Perhaps a new firmware might change that.
Original photos in RAW format (12-bit '.NEF') can be downloaded at this link (33 files, 600 MB).
Sample Photos Nikon D40
How can it be without a lens test on an old lady Nikon D40? This is the most interesting thing - to drive a high-quality lens on an old camera with a 6MP CCD sensor. Easily convert original RAW files with the original Nikon Capture NX-D v 1.4.6 utility. Some of the photos (where there is no backlight) were taken using protective filter Hoya Pro1 Digital 77mm MC UV (0) made in Japan.
Original RAW photos (12-bit '.NEF') can be download from this link (11 files, 60 MB).
Examples in processing
Sample Photos Nikon D750
Examples of photos on Nikon 20 / 1.8G were shared by Boris, the owner of this lens:
Original autofocus alternatives
Nikkor F for SLR cameras:
- Nikon 14 mm 1: 2.8D AF
- Nikon 16 mm 1: 2.8D Fisheye AF
- Nikon 18 mm 1: 2.8D AF
- Nikon 20 mm 1:2.8 AF
- Nikon 20 mm 1: 2.8D AF
- Nikon 20 mm 1: 1.8G N AF-S
- Nikon 8-15 mm 1: 3.5-4.5E Fisheye AF-S
- Nikon 14-24 mm 1: 2.8G N AF-S
- Nikon 16-35 mm 1: 4G VR N AF-S
- Nikon 17-35 mm 1: 2.8D AF-S
- Nikon 18-35 mm 1: 3.5-4.5D AF
- Nikon 18-35 mm 1: 3.5-4.5G AF-S
- Nikon 20-35 mm 1: 2.8D AF
Nikkor Z for mirrorless cameras:
I worked with Nikon 20 / 1.8G for about two weeks and shot several events with it, I was very pleased with the final image.
I really liked Nikon 20 / 1.8G. Nice and very functional lens. True, while working with Nikon 20 / 1.8G one gets the impression that you are working with a budget Nikon 35mm f / 1.8G DX... This is due to the plastic light body, in the middle of which something dangles and the compact focusing motor, which emits its characteristic sound during operation.
Nikon 20 / 1.8G is very good at crop, where it converts to a stock standard lens. 24 megapixels on the APS-C sensor is not a hindrance for him, even at F / 1.8.
The Nikon 20 / 1.8G is one of the sharpest lenses I've ever shot.
I recently reviewed a similar manual premium lens. Carl Zeiss Distagon 2.8 / 21 T * ZF.2which is better than Nikon 20 / 1.8G in the image corners. Still, I think the Nikon 20 / 1.8G is a much more balanced solution.
Nikon 20 / 1.8G can be safely bought and used for its intended purpose.
Prices in popular online stores are available. look at this link.
Nikon 20 / 1.8G is a modern super chirp with a large aperture... Has a very high resolution in the center of the frame. Overall, this is a very good lens.
10 main advantages:
- high aperture
- light weight
- standard filter diameter for professional lenses at 77mm
- internal focusing, high speed focusing, M / A mode
- small MDF, good maximum magnification ratio 0.23 X
- ultrasonic focusing motor (for example, the previous model did not have it)
- metal bayonet, hood included, rubber bayonet seal
- the optical design uses 4 special elements
- SIC + Nano Crystal Coat
- good sharpness at F / 1.8 in the center of the frame, in general, good optical performance
10 main disadvantages:
- quite high price tag (comparable to Sigma 20 / 1.4 Art)
- little noise from focus motor, non-annular motor
- focus ring travel is only 90 degrees
- no hard stop (important for ultra-wide)
- something dangles in the middle, gives the feeling of an inexpensive thing
- only 7 aperture blades, aperture only closes up to f / 16
- it is possible to get a large amount of glare in the backlight
- noticeable drop in sharpness in the corners of the frame at F / 1.8
- tangible chromatic aberration (including blooming and freezing)
- strong vignetting at F / 1.8 when focusing at infinity