Viltrox AF 9mm f/2.8 Air

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Prime lens

A prime lens by Viltrox for APS-C cameras, 9mm f/2.8. A tiny autofocus ultra-wide for APS-C.

What it frames like

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

How wide 9mm sees on each sensor it covers.

f/2.8 wide open, to scale against f/1.4.

On APS-C (Sony E, Fujifilm X, Nikon Z): like 14mm on full frame; f/2.8 gives about the depth of field of f/4.2 there.
On the larger-sensor bodies of Nikon Z, Sony E: it works with the camera in a APS-C crop mode, at fewer megapixels.