You asked
Is the canon rf 28 70mm f 2l usm good on aps c?
Here is what the site says about that.
From Canon RF 28-70mm f/2L USM: Canon RF 28-70mm f/2L USM: A zoom lens by Canon for Full frame cameras, 28-70mm f/2. A big, heavy zoom with the aperture of a fast prime. Specs - Maker: Canon - Focal length: 28-70mm (zoom) - Maximum aperture: f/2 - Made for: Full frame sensors - Mounts: Canon RF - Stabilised: no - Autofocus: yes What it frames like - On full frame (Canon RF): as marked, 28-70mm. - On APS-C (Canon) (Canon RF): ...
From Lenses: Your first lenses: 1. A standard zoom, 24-70mm or 24-105mm equivalent. The kit zoom is fine to start. 2. A fast standard prime, a 50mm f/1.8 on full frame or a 33-35mm f/1.4 to f/1.8 on APS-C. Low light, people, food. 3. Then add for what you shoot: a telephoto zoom for wildlife and sport (wildlife and sport), a wide zoom for landscapes (landscape), or an 85mm for portraits (portraits).
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