I have these two options (both used lenses in very good condition) and they are going almost for the same price. I am here debating which one to choose as I may not have time to do full testing or even read a lot. Then, I want to rely on some sound advise from users and your experience. i want it mostly for portraits, events, night shooting. I am new to the business and trying to get the right tools. Have eos M, 5D original and 5D-III. I have the 70-300 non-L IS USM, which has giving me some very good results in daylight plus the fantastic 85mm 1.8; Also I have 17-40 F4, 50mm 1.4, and 100mm 2.8 macro. Thanks.



