Paul Becker (11.03.19, 10:16 AM): What about the Sigma 17-50mm f/2.8 EX DC OS HSM?

Lau Bjerno (11.01.19, 8:56 PM): I just took a few pictures with my Canon EF-S 35mm f/2.8 Macro IS STM, and I’ve no complaints as to the sharpness.

Bruce King (10.29.19, 3:07 AM): The Canon 600mm mk3 is a definite for the 90D

Lynn (10.28.19, 4:06 PM): Any info on the Tamron 18-400? Many thanks for your work!

Susan Reed (10.27.19, 11:06 AM): I will add I got good results from Canon EF-S 60mm f/2.8 Macro USM Fixed Lens on a tripod. Haven't hand held it yet.