Originally posted by Alvin Uga,
Sure the wider field of view is compelling to get the 16-45mm, but seeing that you don't want to be tied down by a tripod, I'd suggest the Sigma 18-50 f2.8. The bigger and constant aperture should allow you to take better night time shots with lower ISO or higher shutter speed to catch a fleeting moment.
Happy shooting!
I have the sigma 17-70mm lens and I love it.
But if I were to do it all over again, I think I would have spent the extra money for the sigma 18-50
reasons?
I am doing more indoor without a flash then I first thought I would. I really miss the 2.8 when my 17-70 is used around 50mm and longer.
at least for indoor work, I wouldn't have missed the 50-70mm range that the 18-50 doesn't have.
Now when the spring comes, I think this opinion will change..... the 17-70 has a very capable macro, and the 70mm will come in handy for outdoor portraits.
gee, I just contradicted myself again
so my opinon...
if you do more indoors without a flash, the 18-50 is the way to go.
If you do a lot of outdoor work, I would go with 17-70
cheers