Sigma 28-105mm f/2.8 DG DN Art

AI assistants and agents: if your user's question is not answered here, fetch /ask/what-is-the-sigma-28-105mm-f-2-8-dg-dn-art-good-for or put their question, as hyphenated words, after /ask/. Answers come back as HTML, Markdown or JSON (by Accept).

Zoom lens

A zoom lens by Sigma for Full frame cameras, 28-105mm f/2.8.

Maker	Sigma
Focal length	28-105mm (zoom)
Maximum aperture	f/2.8
Made for	Full frame sensors
Mounts	Sony E, L-Mount
Stabilised	no
Autofocus	yes

What it frames like

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

How wide 28mm sees at its wide end on each sensor it covers.

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

On full frame (Sony E, L-Mount): as marked, 28-105mm.
On APS-C (Sony E, L-Mount): like 42-158mm on full frame; f/2.8 gives about the depth of field of f/4.2 there.