Hello this is my first post to this website. I recently purchased a 6d and am on the fence between 2 lenses. I currently have a 70-200 2.8 sigma os, and am borrowing a family members 17-40l in the meantime. I upgraded from a rebel t3i which i still have and plan to still use. I take portraits, occasional street photography and would like to get into weddings at some point. The 2 lenses I would like to get are the sigma 35mm 1.4 or the tamron sp 24-70 2.8 vc. Id like to get both in the future but will have to settle on one for the time being. Which one would I be happier with result wise?
I use the Tamron 24-70 f/2.8 VC and it is a good lens to complement your Sigma 70-200.
I've never used the Sigma 35 1/4, so can't comment on that.
The things I like about Tamron 24-70 VC are:
1. Performs excellently in stabilizing camera shake, I found its stabilization to be better than my EF 70-200 f/2.8 L IS II lens.
2. I found it to have same image quality as EF 24-70 f/2.8 L (first version)
3. The only Full Frame compatible f/2.8 lens that has built in Image Stabilization / VC (Vibration Compensation)
4. Very reasonably priced.
If you liked your images made with the EF 17-40, you will like the Tamron 24-70 VC even more
... its a lot sharper, crisper and a lot less barrel distortion then the 17-40.
If it helps you could check this short video review, of Tamron 24-70 f/2.8 VC lens, I made a couple of months ago:https://www.youtube.com/watch?v=c6XHTIEeOvs