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.
1118682
you will see some distortion at the 18mm range but will disappear in at the 25 to 28mm area- sometimes it is rather a nice special effect, depends on the shot. Make sure it is a Canon IS lens for the stabilization. The zoom has a very nice range but you will loose some speed as compared to a simple wide angle lens. It is a great walk around lens to suit needs of a wide range of situations.
776894
Robert - Only had the lens for a couple of hours - it had quite a bit of distortion at 18mm.. plus the one I received was a "grey" market one.. no us warranty.. and I was not comfortable with that.. so, I returned it. Never used it in the field.. hope this helps..
1463400
Yes. Photoshop or equivalent editing software. Curious as Why you would use a fisheye & then correct the distortion! If you're looking for UWA, the Tokina 11-16 2.8 is the best there is. I own one (although its F/S here on Amazon) & the color, clarity & contrast is second to none...
196468
Not from what I have seen. At 100x, the distortion is beyond a focus adjustment.
2028038
No. I have had no problems with lens setting at 24mm or 105 mm. My friend who has a canon 24-105 thinks my sigma is much better than his lens.
2054693
I have a Sigma 17mm to 50mm on my Canon T3i, and it works well. I don't see any patterning at all, but I never go more the f/4 on the wide end. So far I still love it. I always go larger on the filters so I don't have an issue with them getting in the shot. The Sigma has a 62mm filter thread if I remember right.
643481
Distortion is more prominent in the camera-object distance. minimum distortion beyond 12 feet
1192437
I haven't used either of the lenses mentioned here but I thought I'd point out something that hasn't been mentioned yet. You say the 12-24 has an aperture range of f4-f5.6, and the 11-16 has a range of f2.8-f22. Actually- in the 12-24, the numbers you mention are the maximum aperture settings. At 12mm it opens up to f4 max, and at 24mm it opens up to f5.6 max. At any zoom range it would stop down to probably f22. So the 12-24 is not limited to only f4-f5.6 as this post suggests. The 11-17 lens has a constant maximum aperture of f2.8 through its whole zoom range, and also stops down to f22. So both of these two lenses have a normal range of apertures, but the 11-17 opens up to a bigger f2.8. Just thought I'd point that out if anyone was misled...
1936776
I've had absolutely no issues. This is my second most go to lens when shooting portraits. I prefer the 70-200 more, but that's just my style.
890712
Bill, I have a K20D also and tried this lens on it - the distortion was apparent at 18mm indoors.. I only tried the lens on the camera.. never used it as I did not get all the proper paperwork nor a lens shield with it... so I returned it the next day to Amazon for a full refund.. only because of the seller.. not the lens itself.. I'd also say.. read as many reviews on it as possible before buying..
632568
While it is a two lens solution, you might be better with the new Canon 18-55 and 55-250 lenses that are both Image stabilized and reportedly darn good lenses and not have to worry about where the Sigma you get has any of the quality issues they are known for.
1816400
Well the HF200 does behave poorly in low light condition, even with the best aperture and frame settings, but I can't tell if it's worse than other HD camcorders.Also, make sure you didn't disable the autofocus, it's easy to make things worse. I don't mean the setting available via the standard FUNC menu, but directly with the Up and Down controls from the wheel, it's the third option from the bottom.The zoom may also affect grain and artifacts, use it sparingly.
10431
Some people suggest 8mm fisheye, which is cheaper instead since you don't care the distortion mainly outside DX sensor. But if distortion is your concern, check some sample pictures taken from 8mm fisheye + DX cameras.
990936
It hasn't been an issue -- I've cropped pictures -- but I am not a pro. I love the lens. It's great for low light shots.
1397993
I have some Sigma lenses that work seamlessly. Just make sure the mount matches when you shop.
757263
Is the cannon macro/telephoto? That could be a factor. Im not sure. I dont have this lens yet. Though it will be my next lens once I get this return issue with the Sigma resolved.