>>3886038>Yeah, but it's pointless. You buy the system and buy the lenses that are made for that system. Backward compatibility is only ever used by people that already own those old lenses.You're entirely incorrect.
EF lenses are designed for BOTH the ef and ef-s mounts. EF lenses are as much designed for crop Canon as they are for full frame Canon.
Most crop Canon users who buy any lenses outside of the kit zooms end up with a few EF lenses. Usually mostly EF lenses, in fact. I shot with crop Canon bodies for years and the only EF-S lens I owned was the 18-55 kit zoom--everything else I had was EF. And then when I upgraded to full frame, they came with me.
It's not even "backwards compatibility" really, it's just... compatibility.
>>3886045>But not one of them is 50mm equiv... Only way of shooting 50mm equivalent on crop is 25mm on mft camera. There are no 31.25mm or 33.33mm lenses.There's nothing magical about the 50mm perspective. "Normal" is a range, not a precise field of view. 28mm on Canon crop (~45mm equivalent) and 35mm on Canon crop (~56mm equivalent) both fall in that range, on whichever side of 50 you want.
And actually, a little fun fact about "50mm" lenses--they're almost never 50mm. Lenses in general are rarely exactly the focal length printed on the barrel. Why? Because it doesn't actually matter, and it makes marketing easier. If Canon RF 50mm f/1.8 was marketed as the Canon RF 48.70mm f/1.85 instead, it would just confuse people
(That's what it actually is. Source:
https://www.canonrumors.com/patent-canon-rf-50mm-f-1-8/ )
Similarly, not sure which of these ended up going into production, but Sony's FE 50mm f/1.8 is somewhere between 46.19 and 53.54mm and might be anywhere from f/1.8 to f/1.87. Source:
https://www.dailycameranews.com/2015/04/sony-fe-50mm-f1-8-lens-patent/A few millimeters here or there doesn't matter. You've been shooting with lenses that aren't quite 50mm your whole photography career and never once noticed.
