You asked

What is the leica elmarit m 90mm f 2 8 good for?

The Leica Elmarit-M 90mm f/2.8 is a manual-focus prime for full-frame Leica M bodies. It's a common, affordable used 90mm, and that's a big part of its appeal. The site doesn't list any stabilisation, so you'll want to rely on shutter speed and a steady stance.

It's best for portraits. A 90mm sits close to the classic 85mm, so you stand a comfortable distance from your subject, which flatters faces and gives a soft background at f/2.8. The Portraits guide explains why that distance matters.

It fits a lot of bodies. For a current, well-rounded pairing, I'd go with the Leica M11 or the Leica M10. If you want to save money, the Leica M (Typ 240) is a sensible older choice. For the basics of aperture and blur, see the Lenses guide.

Written by Claude from this site's pages.

From these pages