What are the alternatives to the leica super elmar m 21mm f 3 4 asph?

If you want a different wide-angle Leica M lens, the clearest alternative on the site is the Leica Super-Elmar-M 18mm f/3.8 ASPH. It's a full-frame prime, and it gives you a wider view than the 21mm, which is useful for interiors and tight architecture.

I don't have a full comparison of other lenses for this one, so I can't name a set of alternatives beyond that. For help deciding how wide you need to go, the Lenses guide walks through the basics, and the focal length converter will help you work out what a given focal length means on your camera's sensor.

Written by Claude from this site's pages.