Viltrox AF 20mm f/2.8 review: it goes large on viewing angle, small in purchase price

The ultra-wide-angle Viltrox AF 20mm f/2.8 packs a lot into a small, lightweight and amazingly affordable package.

Viltrox AF 20mm F2.8
(Image: © Matthew Richards)

Digital Camera World Verdict

I really like the compact, lightweight construction of the Viltrox AF 20mm F2.8, and that it’s so incredibly inexpensive to buy. It’s an ideal pocket-sized extra lens for when my 24-70mm zoom won’t go wide enough to see the bigger picture.


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    Ultra-wide viewing angle

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    Compact and lightweight

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    Amazingly affordable


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    Corner-sharpness could be better

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    No aperture control ring

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    No weather-seals

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I have Nikon Z and Sony E-mount camera bodies that I use for work on a pretty much daily basis. My supporting cast for both types of cameras includes a number of own-brand Nikon and Sony lenses, plus a growing range of Viltrox lenses. The latter includes the APS-C format Viltrox AF 13mm F1.4, Viltrox AF 23mm F1.4, Viltrox AF 33mm F1.4, and Viltrox AF 56mm F1.4 primes, plus the faster Viltrox AF 27mm F1.2 Pro

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Mount optionsNikon Z (FX), Sony E (FE)
Lens construction10 elements in 8 groups
Angle of view91.6 degrees
Diaphragm blades7
Minimum aperturef/16
Minimum focus distance0.19m
Maximum magnification0.17x
Filter size52mm
Nikon Z 20mm F1.8 S

The Nikon Z 20mm F1.8 S is a fabulous lens. It’s 1.33 f/stops faster and is from Nikon’s range of ‘pro-grade’ primes. However, it’s bigger and heavier at 85x109mm and 505g, and costs around four times the price to buy.

Sony FE 20mm F1.8 G

The Sony FE 20mm F1.8 G is one of Sony’s ‘Gold standard’ lenses and has neat handling extras including an aperture ring and autofocus-hold button. It’s quite compact at 74x85mm and 373g but, again, costs about four times as much as the Viltrox.

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Matthew Richards

Matthew Richards is a photographer and journalist who has spent years using and reviewing all manner of photo gear. He is Digital Camera World's principal lens reviewer – and has tested more primes and zooms than most people have had hot dinners! 

His expertise with equipment doesn’t end there, though. He is also an encyclopedia  when it comes to all manner of cameras, camera holsters and bags, flashguns, tripods and heads, printers, papers and inks, and just about anything imaging-related. 

In an earlier life he was a broadcast engineer at the BBC, as well as a former editor of PC Guide.