Compare lenses

Nikon Z 20mm f/1.8 S vs TTArtisan 21mm f/1.5 ASPH

The Nikon Z 20mm f/1.8 S and the TTArtisan 21mm f/1.5 ASPH side by side, computed from this guide's catalogue.

Which to pick

Pick the Nikon Z 20mm f/1.8 S if you want autofocus. Pick the TTArtisan 21mm f/1.5 ASPH if you want a brighter f/1.5 (0.5 stops more light), for dim light and softer backgrounds and a fit on more cameras (95 against 16 in this guide).

Still torn? Ask the guide about the Nikon Z 20mm f/1.8 S and the TTArtisan 21mm f/1.5 ASPH

Specs side by side

Rows that differ are in full colour; the better value is marked where one is better by any measure.
SpecNikon Z 20mm f/1.8 STTArtisan 21mm f/1.5 ASPH
MakerNikonTTArtisan
Focal length20mm (prime)21mm (prime)
Full-frame equivalent20mm21mm
Maximum aperturef/1.8f/1.5brighter
Made forFull frameFull frame
MountsNikon ZSony E, Nikon Z, Canon RF, Leica M
Stabilisednono
Autofocusyesautofocusno, manual focus
Weight505 gnot listed
Cameras it fits16 in this guide95 in this guidefits more cameras

Focal range, in full-frame terms

142435508513520040080020mm equiv.Nikon
Nikon Z 20mm f/1.8 S: 20mm.
142435508513520040080021mm equiv.TTArtisan
TTArtisan 21mm f/1.5 ASPH: 21mm.

Aperture

f/1.8
Nikon Z 20mm f/1.8 S: f/1.8 wide open.
f/1.5
TTArtisan 21mm f/1.5 ASPH: f/1.5 wide open.

Each opening drawn to scale against f/1.4: a smaller f-number lets in more light and blurs the background more.

Field of view

Nikon · 84°TTArtisan · 81°
How wide each sees, at each end, on the sensor it was made for.

Cameras they fit

16 cameras in this guide take both, so either works on the same body. In all, the Nikon Z 20mm f/1.8 S fits 16 and the TTArtisan 21mm f/1.5 ASPH 95.

Nikon Z 20mm f/1.8 S

and 6 more

TTArtisan 21mm f/1.5 ASPH

and 85 more

On their own pages