AF-S Nikkor 20mm f/1.8G ED
- 20mm
- f/1.8
- Prime
- 355 g
- Min focus 0.2 m
Affiliate link: we may earn a commission on qualifying purchases at no extra cost to you.
Quick answer
The AF-S Nikkor 20mm f/1.8G ED is a compact fast wide-angle prime for Nikon FX cameras with ED glass and Nano Crystal Coat.
Pros
- f/1.8 aperture
- Compact (355 g)
- Sharp
- Nano Crystal Coat
Cons
- Visible distortion
- No VR
- Coma at the edges wide open
Verdict
A fast ultra-wide prime for FX.
About this lens
Nikon AF-S Nikkor 20mm f/1.8G ED: a fast wide-angle prime lens with a 20mm focal length and a maximum aperture of f/1.8, made for Nikon F mount cameras, with Silent Wave Motor autofocus and extra-low dispersion glass. The wide view suits landscapes, architecture and environmental shots.
Nikon AF-S Nikkor 20mm f/1.8G ED specifications
- Brand
- Nikon
- Mount
- Nikon F
- Focal length
- 20mm
- Maximum aperture
- f/1.8
- Lens type
- Prime
- Format coverage
- full-frame
- Released
- 2014
- Optical construction
- 13 elements in 11 groups
- Aperture blades
- 7
- Autofocus motor
- SWM
- Minimum focus distance
- 0.2 m
- Maximum magnification
- 0.23x
- Filter thread
- 77 mm
- Weight
- 355 g
- Length
- 80.5 mm
- Diameter
- 82.5 mm
Specification source: imaging.nikon.com
What can you shoot with the Nikon AF-S Nikkor 20mm f/1.8G ED?
- Landscapes
- Astro
- Interiors
Its fast maximum aperture helps in dim light and gives good subject separation.
Full-frame equivalent and field of view
Calculated from the focal length and crop factor. Not measured.
| Sensor | Crop | Equivalent | Horizontal FOV | Diagonal FOV |
|---|---|---|---|---|
| Full frame | 1.0x | 20mm | 84° | 94.5° |
| APS-C | 1.5x | 30mm | 61.9° | 71.6° |
Frequently asked questions
Is the AF-S 20mm f/1.8G ED a full-frame lens?
Yes. It is an FX lens and works on DX bodies as a 30mm-equivalent lens. On FX bodies you get its full field of view; DX bodies apply a 1.5x crop factor.
Is the AF-S 20mm f/1.8G good for astrophotography?
Yes, with some coma in the corners when used wide open. Stopping down slightly reduces it.
Does the AF-S 20mm f/1.8G have vibration reduction?
No. It relies on its fast aperture, and the wide 20mm view is relatively forgiving for handheld shooting.
Alternatives for Nikon F from other brands
All Nikon F lensesSame mount, overlapping focal range, closest maximum aperture first.
