You asked

Is the leica elmarit tl 18mm f 2 8 asph worth it?

It's worth it if you shoot with an APS-C Leica and want a small everyday lens. This pancake prime is about 27mm equivalent, so it fits easily in a coat pocket on a TL, CL or T. It has autofocus but no stabilisation, so keep your shutter speed up in dim rooms.

It fits the Leica TL, TL2, CL and T on APS-C, and it works in crop mode on full-frame L-Mount bodies such as the SL3. At f/2.8 on APS-C, you get about the depth of field of f/4.2, so don't expect much background blur. For that, look at the portrait lens picks.

I'd skip it if you mainly want shallow depth of field. I'd buy it for street and travel. If you're unsure whether your setup suits it, the sensor guide explains the trade-offs.

Written by Claude from this site's pages.

From these pages