No distortion problems? So the Sigma 12-24 has solved the distortion problem below 18mm?
1199583
Go to the Sigma website to see sample pictures. It looks like the lens has slight pincushion distortion. You may be confusing distortion with exaggerated perspective. Of course, this lens does make near objects seem very large compared to distant objects. That should not be considered distortion. You, as the photographer can use the perspective to your advantage for creative effect. If you do want distortion, apparent bending of straight lines, you should consider a fisheye lens.
1199584
Yes. This is a rectilinear lens, not a fisheye, if that's what you mean by "the distortion problem". This is the only super-wide zoom for full-frame Canon cameras, as the Canon 10-22 is an EF-S lens for cropped sensors only.
2266647
Yes, it automatically rotate, No noticeable distortion if the original shots resolution was high.
997282
No distortion but it's a little difficult to use after using an 8x for so long. I prefer the 8x because I can see my whole face at the same time. The 10x I can only see sections. But the 10x model is more flecible than tge old 8x I had. If this one dies, I'll go back to the 8x. You can test the magnification difference at places like Bed Bath and Beyond
1181151
No, I tested it with a SLR film camera (full frame) and at 18mm you can see a dark circle around the image, over 24mm the circle disappears. This lens works well in APS-C cameras.
1395738
Yep works fine, pic quality though comes down a bit, but sure does increase the wide angle by a lot + fols look a lot thinner due to the curvature. :p
543320
I had the 1.8 and switched to the sigma and LOVE IT!! My pictures are more colorful and sharper plus I love the depth of field!!!
342852
Overall I am delighted with the image quality of this lens. I'd prefer to use the 24mm setting to minimize distortion in a group of people (if conditions permit). I use it mainly as a landscape lens and still use it extensively.
1153435
Yes for both questions. The site dpreview.com reviewed this lens (http://www.dpreview.com/lensreviews/sigma-18-35-1-8/4) and notice an almost unusable vigneting when mounted in a full frame camera. But, you can decide by yourself.
1519724
I didn't really examine that.....the sharpness of the lens I got direct from Canon was so bad that after taking a couple dozen shots and examining them closely I sent it back for a refund. I replaced it with a 12-24 Sigma which appears to be much superior in every respect...at about 40% of the price
196468
Not from what I have seen. At 100x, the distortion is beyond a focus adjustment.
1773176
If your using an FX full frame camera its great. If you have a DX camera the 18mm would be the equivalent. If you want to limit distortion with out breaking the bank. But Capture NX2 and click on lens Distortion. It automatically fixes the Distortion on your PC Nikkor Lens. If your shooting NIKON you NEED capture NX2 or your not getting your money's worth.When you buy this lens your paying to shoot in LOW LIGHT!!! ;D
446654
I did not notice any vignetting, but I was using the 14mm f/2.8L II version, which supposedly eliminates that, espically when stopped down to 5.6 - 8.0 range. What I DID find was an absolute unacceptable sharpness falloff about 1/4 from the edge. I thought for a while that I was shipped the original 14mm, because it was notorious for that. Alas, it was the II version and Amazon accepted it back, no questions asked. I am considering ordering another, because there *is* the occasional lemon. I may have just gotten one. A good site for comparisons: &lt;http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=454&Camera=453&Sample=0&FLI=0&API=4&LensComp=280&CameraComp=9&SampleComp=0&FLIComp=0&APIComp=4&gt; or http://tinyurl.com/ygt355j Good luck!
598368
I didn't know it was supposed to have barrel distortion, but I'd think this would be an optical thing about the lens. I wouldn't think it would matter what camera the lens was on. Haven't noticed chromatic problems but I suppose it must be there. Hope somebody can help you more exactly.
357732
I think the 24-120 is considerably more usable, and the f2.8 is not really necessary for low light with the D750 sensor. The f2.8 offers shorter Depth of Field, if that's the important thing to you. I have a 24-85mm f2.8-4D (I don't like the G version) that I use for this range on my D800E, mostly. It's a lot smaller and lighter than the 24-120 f4, with similar optical performance. It lacks the 24-120 VR.The 24-70 is by far the largest and heaviest of the lenses I've mentioned, a negative for me.
1252945
For the 24-105, you shouldn't have problems with vignetting if you've got a single filter (no stacking thereof) and are shooting with with your aperture closed down a bit. Good Luck!
1397993
I have some Sigma lenses that work seamlessly. Just make sure the mount matches when you shop.
1740236
I have not tested for distortion. I would call Champion about the unit for technical questions about the unit you have purchased, or are considering.