Sigma 50-100mm f/1.8 DC HSM Art

This page is a summary. For anything more specific, ask: /ask/what-is-the-sigma-50-100mm-f-1-8-dc-hsm-art-good-for, or any question as words after /ask/.

Zoom lens

A zoom lens by Sigma for APS-C cameras, 50-100mm f/1.8. A constant f/1.8 telephoto zoom for APS-C DSLRs, the partner to the 18-35mm f/1.8.

What it frames like

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

How wide 50mm sees at its wide end on each sensor it covers.

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

On APS-C (Nikon F): like 75-150mm on full frame; f/1.8 gives about the depth of field of f/2.7 there.
On APS-C (Canon) (Canon EF): like 80-160mm on full frame; f/1.8 gives about the depth of field of f/2.9 there.
Not usable on the larger-sensor bodies of Canon EF: they have no crop mode (and Canon's EF-S lenses don't even mount on them), so it is for APS-C bodies only.
On the larger-sensor bodies of Nikon F: it works with the camera in a APS-C crop mode, at fewer megapixels.