Sigma 10-20mm f4-5.6 EX DC HSM

I first ordered this lens for my 5D Mark II. I know that it is my fault that i didn't read it would't work well with full frame cameras. So i contacted Amazon to try to get the order cancelled, but they said it could not be cancelled because it was about to be shipped. The lens arrived the next afternoon, I applaud their fast shipping but when I got home I had a $500 lens sitting in front of my APARTMENT DOOR not given to the office or back to the UPS facility. The part that is clearly Amazon's fault is that there was no outer box, just the box the lens comes in with a shipping label slapped on it. The box was bent and damaged. I don't know the condition of the lens because I needed to promptly return this lens because I have the Sigma 15mm 2.8 on the way. I know some of the was the fault of UPS, but having no outer box and no invoice slip in completely unacceptable. I am a prime member so this just leaves a bad taste in my mouth. I hope the return process is smooth. PS the lens is probably fine for crop sensor cameras I would just call amazon in advance and make sure they package your investment correctly.

Pretty happy with my purchase, I do notice with the camera flash a dark spot where the lens shadowed....out past 8 feet this wasn't a probem.

I've had this lens for about a week and I freakin' love it. I'm using it on an Canon EOS Rebel XS 10.1-Megapixel Digital SLR Camera - Black (Body Only) and it is running smoothly. The capture range is ridiculous, it's fast, pretty crisp and overall reliable. The lens is a bit heavy but expect that for decent glass. And there is massive distortion on the corners but that's what you should expect when it comes to a near fish-eye capacity. I'm probably really amazed by this because I started off with a fixed Canon EF 50mm f/1.8 II Camera Lens and felt so limited in range (I decided against the 18-55mm kit lens, which I financially should've got, but the 50mm is amazing and can shoot at f1.8!). So to alleviate, I got the complete opposite. A pricey solution, but much better than getting the Canon brand version of this lens, which is nearly double in cost. The one bad thing about this lens is that it's pretty massive. Using the internal flash, the lens will create a shadow onto your photos. A way to alleviate this is to get an external flash, bigger than the Canon Speedlite 270EX Flash for Canon Digital SLR Cameras . Those are still too low from the camera and will still create a shadow when the flash is facing forward. Bounce flash solves this, but you also run into the problem of the wide-angle-ness capturing the line of light onto walls. Essentially, shooting at 10mm isn't the best for flash, but zoomed in should be alright. Hopefully this rambling helps. Just another satisfied customer.

There are many reviews out there for this lens that seem to indicate there could be a quality control problem. Well, I'm not sure if that was the case, but my version of this lens had issues. I was using it with my Canon Rebel T2i. First the positive: Exceptional build quality, comes with a case and hood, and you can't beat the price! There is no doubt this thing is wide! Now the negative. The autofocus seemed slow and hit or miss with my camera. This wasn't nearly as much of a problem as the SOFTNESS, or should I say the inconsistent softness. Wide open it was definitely soft around the edges, and sometimes even soft in the center. Stopping down there were certain apertures/zoom combinations where the picture would come out completely tack sharp all around, but then you stop down just a step further and it's back to being soft around the edges, and moreso on the left side of the picture. In all fairness, I'm pretty sure the lens had some problems that I shouldn't use for passing final judgement on a "good version". The tack sharp pictures definitely showed the potential of this lens. With that said, maybe this was unrealistic expectations on my part, but the distortion present at 10-12mm is worthy of the circus. Overall though, I'm not dealing with whether or not I can get a good copy. I gave it one shot and it didn't pass so I returned the lens. In comparing with my Canon 17-55 F2.8 and it's ridiculous sharpness I just couldn't get over the softness. At this point if I really get the wide angle urge I'm going to go with the Canon 10-22, but I'd rather just wait until I switch to full frame for one of the L wide angle lens.

First off, This is Donna Shelby's son. & this is my review. I absolutly love this lens! I mainly do videography, so thats why I use this lens. I have it on a Cannon EOS Rebel T2i/550D. I love how its so wide, yet doesn't distort. Check out a video I made with it to test it out! look up minischloob on you tube. thats my username. be sure to check out my bird refuge video. Thats the one the lens is used in.