You asked

What cameras fit the canon rf s 55 210mm f 5 7 1 is stm?

Here is what the site says about that.

From Canon RF-S 55-210mm f/5-7.1 IS STM: Canon RF-S 55-210mm f/5-7.1 IS STM: A zoom lens by Canon for APS-C cameras, 55-210mm f/5-7.1. Specs - Maker: Canon - Focal length: 55-210mm (zoom) - Maximum aperture: f/5-7.1 (it gets darker as you zoom in) - Made for: APS-C sensors - Mounts: Canon RF - Stabilised: yes - Autofocus: yes What it frames like - On APS-C (Canon) (Canon RF): like 88-336mm on full frame; f/5-7.1 gives about the depth of field of f/8-11.4 there. ...

From Your first camera: What to buy: For most people, a first camera should be a mirrorless camera with an APS-C sensor and its kit zoom. Mirrorless cameras show you the exposure before you take the picture, their autofocus finds and follows eyes, and every major brand is putting its new lenses into mirrorless mounts. A recent entry-level body is plenty; the money goes further in lenses. If you want something that fits in a jacket pocket ...

Quoted from this site's pages.

From these pages