rounder_09 wrote in post #16441428
The boss (the wife) has given be the approval to get a new lens, so looking for some friendly advice on what my next move is. Budget is about $500. I just can't decide

Hoping that the pro's around here can help with some guidance.
What I have:
- 7D
- 50mm 1.8
- Sigma 17-70
- Canon 70-200 F4 non-IS
- 580 ex II
I shoot my kids the most, and an occasional wakeboarder. I'd like to get something faster and wider, like the Sigma 30mm 1.4 - but am hoping to go full frame some day. Hopefully soon.
I guess my question is: is the Sigma 50mm worth the upgrade versus the Canon 50 mm 1.8? Will that quench my thirst for better pics long enough to hold off for a full frame?
Potential options:
1) Sell the 17-70 and the 1.8. Buy a Sigma 50mm 1.4 and 30mm 1.4. Problem is this further commits me to a crop sensor
2) Sell the 17-70, 1.8, 70-200 and 7D. Buy a Sigma 50mm 1.4 and a 6D or 5D mark ii. Problem is that now I'd only have one lens

3) Sell the 17-70 and the 1.8. Buy a Sigma 50mm 1.4, which will be about a wash for price. Tuck my $500 away and hope the boss doesn't repossess it. Wait for full frame prices to come down.
4) Other ideas?
Any suggestions would be much appreciated!

Do you really need faster than f2.8? Realistically, shooting kids, are you more likely to probably only go as far as maybe f2.0 of f2.2? Think of your experience with the 50mm 1.8, do you shoot your kids at 1.8? Or do you stop down? I think that will help you figure out the best options for moving to a new lens, if any is needed.
I will also go ahead and warn of the Sigma. The 30mm 1.4 is a fantastic lens, but is seriously plagued with focus (front/rear) issues. I had to send my copy back, and didn't bother getting it replaced, because of this. I lost a lot of shots of my newborn to this lens because it just can't focus properly. Bit me in the butt, taking the Sigma gamble. Consider that, as it's not just me, that lens (and many other Sigmas) just simply have this issue with focus--even though optically they are superb lenses. I would basically not trade in all my canon lenses for a sigma lens. I would do the opposite.
Instead of the 30mm 1.4, maybe look at the Canon EF 35mm f2.0 IS USM. Same price range. Great for both crop and full frame.
On the subject of sensor size, I would say you really shouldn't worry about being on a crop of being full frame. The 7D is a very good camera. Going to a full frame is not going to net you hardly anything. You're shooting your family. I wouldn't make that move unless you have a ton of recreational cash, or if it's part of your income (as in your job) to do photography/video on a regular basis. You just don't get a ton of benefits for the cost when you already have a good camera and good lenses. I would stick with the 7D and just continue to find glass that works for you, and simply get better with your equipment and photography in general.
If you want an alternative zoom, with some reach, I would instead look at the Tamron 28-75mm f2.8. Not an expensive lens, and performs great.
I think you're suffering from the text-induced "need" to have full frame, for no real gain in quality of your photos. A good photographer will produce nearly the same photo with either a full frame or your 7D, and can do it with even a "lesser" camera. You don't need a different sensor, format, or a new camera. You just need a good mid-tier to higher quality lens, and a better skill set using what you have.
If you like the focal range of the 50mm, then maybe get the 50 1.4 (canon).
Otherwise, if you want it wider, maybe look at the Canon EF 28mm, and the EF 35mm f2 IS USM.
Very best,