Good / bad? I shoot for a bar here and have been using a Canon Nifty Fifty 1.8 II, Tamron 18-270 Di-II VC and a 28-90 USM III. The 28-90 came with a 35mm EOS Elan 7e and the AF is pretty good in low light, much better than my Tamron and Nifty Fifty. I love the range on my Tamron and it's a pretty sharp lens but it blows big chunky nuts in low light a lot of times I just manually focus. The Nifty Fifty is great for bokeh and shots without flash. the 28-90 is ridiculously good in low light for some reason and I honestly can't tell the differences and the same F-stops between the three. I shoot on a gripped Rebel XTi with a Focal DA-2000 hotshot-mount flash (came with an EOS 650 for free) the whole setup gets the job done quite well. So, good or bad? Feel free to post your setups I know we got a few bar photographers here.