Yongnuo YN85mm f/1.8 DF DSM

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Prime lens

A prime lens by Yongnuo for Full frame cameras, 85mm f/1.8.

What it frames like

Its full-frame-equivalent focal length on the sensor it was made for.

How wide 85mm sees on each sensor it covers.

f/1.8 wide open, to scale against f/1.4.

On full frame (Sony E, Nikon Z, Canon RF): as marked, 85mm.
On APS-C (Sony E, Nikon Z): like 128mm on full frame; f/1.8 gives about the depth of field of f/2.7 there.
On APS-C (Canon) (Canon RF): like 136mm on full frame; f/1.8 gives about the depth of field of f/2.9 there.