You asked
Best camera for the leica apo vario elmarit sl 90 280mm f 2 8 4?
This lens is made for full frame, so I'd pair it with a full frame body. Any of the bodies on its catalogue page will work, and it's stabilised, which helps when you're zoomed to 280mm.
- Leica SL3 is my pick if you want the full Leica system. The lens was built for the SL line, so it fits naturally.
- Leica SL2-S is the one to look at if you want the same SL mount for less.
- Panasonic Lumix S5 II is a sensible choice if you want to pair a long zoom with a body from another maker.
The Leica T, TL, CL and TL2 also take this lens, but they are APS-C, so it frames tighter there (roughly 135-420mm). That can suit wildlife, but you lose the wide end. If you're unsure, lenses explains how crop factor changes what a focal length does.
Written by Claude from this site's pages.