You asked
Best telephoto lens for the leica tl2?
For a telephoto on the TL2, I'd start with the Sigma 70-200mm f/2.8 DG DN OS Sports. It frames like 105-300mm on full frame, and its OS stabilisation matters because the TL2 body has none.
If you want a Leica-branded native lens, the Leica APO-Vario-Elmar-TL 55-135mm f/3.5-4.5 ASPH is smaller and frames like 82-202mm. It's a good fit for portraits and general telephoto work, though it's slower than the zooms above.
For bright, shallow-focus shots, the Samyang AF 60-180mm f/2.8 frames like 90-270mm and gives you a fast aperture at a shorter reach.
For tips on choosing by subject, see wildlife and sport. You can also check the full list of lenses for this body on the Leica TL2 page.
Written by Claude from this site's pages.