The Viltrox AF 20mm F2.8 Z is a 20 mm prime lens with a maximum aperture of f/20 for the Nikon Z, Sony E mounts. Here are its field of view on different sensors, hyperfocal distances, Milky Way exposure limits and the cameras it fits.
Focal length
20 mm
Max aperture
f/20
Mount
Nikon Z
Designed for
Full frame
Field of view by sensor
| Sensor | Diagonal angle of view | 35 mm equivalent |
|---|---|---|
| Full frame | 94.5° | 20 mm |
| APS-C (1.5×) | 70.5° | 31 mm |
| Canon APS-C (1.6×) | 68.1° | 32 mm |
| Micro Four Thirds | 56.8° | 40 mm |
Hyperfocal distance
| Focal length |
|---|
| 20 mm |
Circle of confusion 0.030 mm (sensor size the lens is designed for).
Longest exposure for sharp stars
| Camera | NPF rule (wide open) | 500 rule |
|---|---|---|
| Full frame (24 MP) | 43.9 s @ f/20 | 25.0 s |
| Full frame (45 MP) | 41.6 s @ f/20 | 25.0 s |
| APS-C (24 MP) | 40.9 s @ f/20 | 16.3 s |
Cameras that fit (68)
- Nikon Z 52020
- Nikon Z5II2025
- Nikon Z5IIC
- Nikon Z 62018
- Nikon Z 6II2020
- Nikon Z6III2024
- Nikon Z 72018
- Nikon Z 7II2020
- Nikon Z 82023
- Nikon Z 92021
- Nikon Z f2023
- Nikon ZR
- Nikon Z 302022
- Nikon Z 502019
- Nikon Z50II2024
- Nikon Z fc2021
- Sony NEX-3
- Sony NEX-C3
- Sony NEX-F3
- Sony NEX-3N
- Sony NEX-5
- Sony NEX-5N2011
- Sony NEX-5R2012
- Sony NEX-5T2013
- Sony NEX-62012
- Sony NEX-72011
- Sony Alpha 60002014
- Sony Alpha 3000
- Sony Alpha 50002014
- Sony Alpha 51002014
- Sony Alpha 72013
- Sony Alpha 7R2013
- Sony Alpha 7R II2015
- Sony Alpha 7 III2018
- Sony Alpha 7R III2017
- Sony Alpha 7R IIIA2021
- Sony Alpha 7 IV2021
- Sony Alpha 7 V
- Sony Alpha 7R IV2019
- Sony Alpha 7R IVA2021
- Sony Alpha 7R V2022
- Sony Alpha 7R VI
- Sony Alpha 7S2014
- Sony Alpha 7 II2014
- Sony Alpha 7C2020
- Sony Alpha 7C II2023
- Sony Alpha 7CR2023
- Sony Alpha 7S II2015
- Sony Alpha 7S III2020
- Sony Alpha 61002019
- Sony Alpha 6100A
- Sony Alpha 63002016
- Sony Alpha 64002019
- Sony Alpha 6400A
- Sony Alpha 65002016
- Sony Alpha 66002019
- Sony Alpha 67002023
- Sony Alpha 92017
- Sony Alpha 9 II2019
- Sony Alpha 9 III2023
Where to buy
B&H PhotoAmazonKEH (used)MPB (used)FAQ
What is the Viltrox AF 20mm F2.8 Z equivalent to on APS-C?
About 30 mm (1.5×) or 32 mm on Canon APS-C (1.6×).
Which cameras is the Viltrox AF 20mm F2.8 Z compatible with?
It fits Nikon Z 5, Nikon Z5II, Nikon Z5IIC, Nikon Z 6, Nikon Z 6II and more (see the full list above).