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Yakim Peled wrote:
Well, the AFD in the 50/1.8 isn't Canon's best AF motor, to put it mildly. I wonder how it will perform with Ring USM lenses like the 28/1.8 and 85/1.8.
Looks pretty similar to the LA-EA1 and the 50/1.8 SAM in focus speed. If relative performance is similar the proper ring USM lenses should be quite a bit faster, if still slow by PDAF standards as the LA-EA1 is usable with SSM lenses but slow with SAM lenses.