Although some reviewers mention focus issues, I haven't seen any mention of the auto focus failing after time, like the Canon 1.4. Is this true?
49855
Have had my Sigma 50 for a year (w/a Nikon mount) and to date it has not failed yet. There are times when I prefer manual, but the AF hasn't failed.
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.
49857
I've had mine for two years and it hasn't failed. Never heard anyone mention the AF failing. AF back focusing, or front focus, yes. But depending on what Canon body you're using most the time Micoadjustment enables you to tweak the lens to focus properly.
561675
No its not defective,no auto feature on it.Its all manual and to focus you must get move in and out to the subject your shooting.Its hard to do with this set there are others that let you use the cameras settings that are better.
1157231
Thanks, Philip. I kept mine, still really pleased. Learned that shooting in "Auto" is my best friend right now (clear crisp photos at any distance from macro to nearly all zoom), but glad to hear the "shaken when stirred" is not a sign of something wrong, or about to go wrong. Best wishes.
1209305
No auto focus control, even if you're using lenses with AF. (At least for the canon lens mount, though I expect all the mounts are like this). Also, iris/exposure control is limited on some lenses. Check their website to see what works.
142362
Has anyone received an official response from Canon on this issue? Specifically, the nature of the issue (hardware/software). I have the same problem. Autofocus outside of the widest zoom setting does not function. The camera lights up focus targets and beeps, but the focus is clearly wrong. The camera is NOT in macro mode.
512484
This is not an official statement but I've been shooting a lot. And I 99% use single point AF, manually setting focus point according to my subject. I never noticed a left focus or lock up problem.
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?
1974696
Yes I too bought this lens not too long ago (under a year) noticed the sound immediately however I expected that heading it from many sources, what troubles me though is that it's been only 6 months and I've had to send it in for service because my auto focus motor failed.
1186387
I'm using the 2x converter with that exact same lens on my Canon Rebel T3. It works fine, but I have a hard time getting it to auto focus. It keeps going in-and-out of focus and runs the battery down in about 5 minutes of trying. I think this is more due to my shaky hands and the extra weight of the converter than anything. Tripod might solve the problem-----haven't tried that yet.
229479
I have had one for about a year. I use it on Autofocus and hand held.I have been pleased with the quality of pictures I have gotten.RZ
1409499
The camera only has good quality auto focus when in the fully automatic mode. When using other programs the auto focus mode is not a top priority feature for the software. The auto focus takes a while to adjust the more you use the zoom feature. I love the camera. I own several high end Nikon SLR's but have more fun with this unit. There are several good books available from Amazon which are excellent on explaining the many features of the camera.
170329
I haven't written a review, and haven't even read the other reviews (yet), but I am *definitely* having the soft focus and out of focus problems you are referring to. I can take 10 consecutive pictures - same lighting/angle, etc. and maybe one will be a good picture, 4 not so good, and 5 completely unusable. I wonder if certain models cause this, or if some of these were just defective. I bought because of all the positive reviews, but wish I would've spoke up when I first received my camera.
1642451
I assume you've tried auto focus at different legnths. If unsuccessful you definitely need to return the lens. Sorry to hear about your troubles.
773885
It is a tiny bit noisy compared to a Canon 1.2 but in reality it's just fine. The auto focus easily detects the focus point but manual focus is still better.
147132
If you mean "does this have autofocus," then no, or at least not on the Canon-compatible lens. You have to manually focus this lens. However, if you simply don't want to deal with focus, or don't want any Bokeh (you want everything in the frame sharp and in focus), you can set the lens focus to infinity, and you're good to go.
1409502
Yes, I must wait for about a second or two for the camera to reach focus. This is in the program [P] mode, or the Auto. Also, if I see a perfect picture, there is a noticeable time lapse between when I press the button and the shutter "releases" [electronically]. This means that on many occasions I have to take another picture and hope for better.
250583
No, it would be great if it had that option though. I haven't had any issues with the auto focus because the camera itself can easily be moved around.