Some lenses that advertise a constant aperture will still have a noticeable flicker as you extend the zoom (bad for video work) Is that an issue here?
311833
I have shot a bunch of 24p video interviews (using a Nikon D7100 & external HDMI recorder) and this Sigma lens, and have seen zero flicker. Frankly, the only video "problem" you'll have with this lens is the short zoom range. 18-35 is just not that much of a difference, so be aware of that when setting up. I love the lens though, it frankly produces beautiful shots.
311834
Not that I can see. It seems constant. It also has no noticeable focus breathing.
857516
So far I have not had a problem with the flash. However, most of the photos I have taken have been landscapes with good lighting so the flash hasn't been used all that much. Sorry I haven't anymore info and good luck.
1197836
I own the previous version of this lens. There was zero zoom creep when brand new, but after a year, zoom creep had gotten pretty bad. It doesn't bother me too much, because I never point this lens downward from a tripod. Just know that if you let go of the zoom ring with the lens pointed downward, you'll definitely have to re-zoom before your next shot. I still highly recommend this lens to friends despite this feature.
49856
I haven't experiences it or heard anything about complete failure. The issue has always been a high rate of focus failure or chronic front/back focus for some copies on some camera bodies. Personally, it's never happened to me. When you're shooting at a very wide aperture, pushed in pretty close, your depth of field is so shallow there will often be some errors. I just accept that and do a lot of refocus and reshoot to cover myself, but I'd do that with any lens under those conditions.
1124393
Yes it works fine but it causes vignetting after about f/5.6 (using the aperture ring on the mount)
1669197
Not at all in my experience. I can see it maybe interfering with flash but I haven't noticed anything like that either.
1476725
I'm using this lens for long range stills... like a shot of a full moon I have it mounted on a Nikon D3100 with a doubler 2X making it a 1000mm Zoom lens. The first thing I noticed was that I couldn't hold it still enough to take a picture without some sort of stabilizer (recommend a tripod), the second thing is the light was really low, which for my purpose was perfect. I haven't tried it for any moving objects.
1974692
Never noticed it one way or another, prob only an issue if you are shooting video and using the built in mic. If you think it is abnormal find a photo store that stocks it and AB it with another lens. That's assuming you live in a city large enough to have a camera shop that stocks Tokina lenses.......
1485413
Mine does the same thing. Lens seems to work just fine. Probably has a friction clutch which permits the focus ring to turn past the stops
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.
794419
I have not seen any problems yet, but I'm only using it on my macro lens and a low f-stop for a good depth of field. I haven't tried a wide open f-stop yet.
1564625
I used this lens for one year until yesterday without any problems. Just yesterday I am experiencing the same issue: quite focus hunting when zoomed out at 70+ and when it stops it is not on focus! Any idea?
1157234
Would not go so far as to say it is normal, only that it has been experienced before :) and at least in my case has not apparently affected operation of the camera. However, for all I know this could have something to do with the fact that this camera has trouble staying in focus taking video sometimes. I'll never know - it's out of warranty now and there are still more pros than cons versus the alternatives available at the time so I'd have kept it anyway. :)
1320207
I'm using it on a Nikon zoom lens with 58mm threads, As the ad mentions, it does show slight vignette when extended, but I was able to remove some of the material on the hood that was causing the vignette with a file.
830128
When disconnected or unpowered, the optical stabilization elements do shake/rattle inside of the lens. When mounted to the camera and the camera is turned on the shaking/rattling ceases. This is the only lens I've encountered that has this "feature."
456870
I haven't experienced any problem with it under normal outdoor lighting. I tend to use manual focus and "live view" on my camera for ensuring precision focusing for landscape images.
185173
Another possibility. The lens will actually zoom (optically) to 28X+ mag at lower resolutions. As stated in the owners manual with possible (I forget the exact wording) degradation of the image. Is it possible you may using a lower res?