ahsanford said:AvTvM said:misleading image A ... adapted 50/1.8 STM is no suitable comparison.
No bias at work here, I'm just making do. I chose the 50 STM because no 50 prime exists for EF-M at that site.
My point being: no one seems to offer a compact 85-ish lens in dedicated crop mirrorless that I am aware of as it appears that it will not be a shorter lens than a compact 85 FF lens on an adapter, and the decision to make it crop-only would waive off any FF users from buying one. So it's possible the various camera/lens manufacturers see a 50 prime as working in a crop-only footprint, but they'll just leave 85s in a FF variant.
The only company that made their own was Fuji -- and they don't have FF business to fret over.
Could Canon make a compact EF-M 85? Sure. But it might be f/2.8 (as you have gathered) to be attractively small.
also beats me, why camerasize.com does not include EF 85/1.8 or 100/2.0 ... but - very compact for a FF lens - EF 85/1.8 lens is physically about 50% longer than EF 50/1.4.
I think that's because Canon were cheap SOBs when they made it -- it's an 85mm lens tucked into a 100mm body. See pic from TDP: it's virtually the same outer barrel and size as the 100 f/2, presumably done to save cost.
- A
Any 85 EF-M prime 2.8 and under, Canon has my money
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