5Dmk3 with 100mm 2.8 USM macro, how fast does it AF?
Re: 5Dmk3 with 100mm 2.8 USM macro, how fast does it AF?
Macro lenses in general will be a tad slower than their non-macro counterparts. As such, I would be looking at the 100mm f/2 instead. And of course, if you were happy with the 50mm on the cropped sensor, then the logical choice is the 85mm on the full frame. The Sigma 85mm f/1.4 is to be a nice lens, but I haven't used it.