I also had to realize that you can still buy battery chargers for the M3 via Amazon not appropriate batteries. Furthermore adapter for M bayonet under 100 Euro are often problematic.
After P80 (outdated and loose contact with the flash) me by the Canon EOS 1200D (poor autofocus) and the Nikon separated, I have now for the most distant subjects a Sony DSC-H 400 (63 x zoom in 4,4-277mm focal length), which is a bit lame and inferior and for "everything else" is a dust and splash-proof Fujifilm X-T1 with very commendable Fujion 16-135mm and 50-230mm lenses and a slight decrease in Fujion a battery grip. Lack internal flash and not a single deliverable lens with more than 230mm focal length is limited to Fujifilm in application and by battery grip, heavy lens and external flash units somewhat clunky. Even using an adapter you can hardly use other lenses useful.
So I came to the small M3 Canon, especially still unexploited rumliegt quite useful Metz flash for Canon cameras (guide number 44 opposite the internal flash of the M3 with guide number 5) with me. The resale value of almost unused Metz flash is very liked. Therefore, I had to keep it. The Metz flash unit is triggered while on the Fujifilm, but the TTL functions can not be used. The large Fujifilm flash has indeed guide number 42, but in TTL mode rather poor illumination has far and wide and also zoom only up to 70mm focal length at the Fujifilm with (the factory claimed 105mm apply only in "35mm" mode, which is probably a full format sensor in the camera assumes the there with Fujifilm to my knowledge in any model). Different filter diameter I have now about 6 different filter diameter for div. Photoobjectives. The offered EOS-M (compatible) lenses continue the filter format chaos. Why can not achieve standardization here?
Once I tested the EOS M3 closer, I post this. In any case would be a lens 16-300mm focal length with usable light intensity a significant asset to my EOS-M3. Perhaps someone may give you a few tips on proper zoom lenses and other accessories for the M3? Otherwise I consider still propagated, Canon to turn his back and me turn to other suppliers.