Hello everyone, recently I've been thinking about upgrading my 7D+15-85 to a 5DIII. The itch for upgrading has been nothing new, but recently I've found myself cringing at the images taken using the 7D+15-85 combo in low light when it is necessary to bump the ISO up to 3200/4000. I often times find myself wishing for a fast zoom lens/better high ISO performance when I'm taking pictures. Photography is a hobby for me, and I still hold a bit of doubt as to whether I should spend the money upgrading to a 5DIII since the 7D is an awesome camera, and the fact that I don't make money from photography.
I normally spend a lot of time looking up info and debating myself before I buy something, I spent a year "considering" before finally buying the 7D. The devil on my shoulder however, is pushing me to go for the 5DIII with a good lens. Thus for the past few weeks I've been browsing around and thinking about what focal lengths I would use more and which lenses I would most likely use. I've found two lenses that appeal to me a great deal (three lenses if I include the 24-70 f2.8LII).
The Canon 16-35mm f2.8L II and Tamron 24-70 f2.8 VC
I know these two lenses aren't in the same class as to warrant a comparison, but when using the 15-85, many a times I found myself shooting from 15-35mm and then from 70-85mm, with less pictures taken with the focal length in between. Thus I thought that I would probably enjoy the ultra-wide angle of the 16-35mm at the expense of the versatility of the 24-70mm. However, it is also hard giving up on the Vibration Compensation of the Tamron lens as it often times proves useful in situations with lower shutter speeds. The 24-70mm f2.8LII is an awesome lens with a not so awesome price tag, not to mention it doesn't have IS so I'm willing to ponder a bit more whether I would like one.
I also own a Canon 70-200mm f4L IS and a Voigtlander Ultron 40mm F2 SLIIN, so my short telephoto range is covered and the Voigtlander is a fun walk-around lens to use when I want to strain my eyes and squint my brains out when focusing. So...
What do you guys and gals think about these two lenses with the 5DIII, has anyone used either often as a walk-around lens? Should I just stick with the 7D like my shoulder angel suggests? Thanks for giving me your opinions, and also thanks for spending your time reading through this.