Does this lens have a known problem with slow &amp; inaccurate autofocusing?
1015519
Hello Brian, in the years I have used this lens all the time and I can report to you that I have never had any problems with this excellent lens. It is sharp and the contrast and color are beautiful. Focusing has always been crystal clear. Also focus speed would be a function of the camera body which has the drive engine for autofocusing. Hope this helps, Paul
298940
This lens is known to be "very slow" in auto focus. But it takes very good pictures when focused for both Panasonic and Olympus Cameras.
996490
I have not noticed any issues with shifting or clunking on my lens. I've had great results with this lens -- quick autofocus and good bokeh on close-ups.
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?
1300383
Hi bruno, I mentioned a rather stiff zoom ring starting around 100mm and no it didn't get better. I did exchange it and the new copy was better but still a bit stiff, the low light characteristics on the replacement improved just a little bit . This lens for me pretty much spends it's time in a drawer unless I'm going somewhere outside that requires going light and the photo's taken aren't important. It's rarely on my camera.
2198947
Unfortunately until Tamron releases firmware update (if it ever happens) this lens will experience a lag during autofocus on D5100 (D5100 is an older camera - over 2 years old)
1700410
I bought this lens about two years ago. I have not used it because of the there is a slight delay in using the focus.
2044907
I have never experienced this problem with this lens and the lens is next to your ear , when using this lens the speed of focusing was very fast and the quality of photos were excellent. When shooting runway this was a great lens. I am currently shooting with a 17-70mm 2.8 lens giving me more flexibility during weddings, but the 105mm is a nice portrait lens as is the 85mm lens.
1517442
I have the same lens and it's my favorite lens. Mine does not make any noise like you've described.
606483
I have these lens and I cannot use the autofocus, only manual. It won't focus no matter at what range. So disappointed..
1015517
As was said by another person the autofocus is handled by the camera body AF motor. This makes it a little slower than other lenses that have the AF motor built in such as SSM lenses. That being said, it focuses plenty quick for my use and focuses accurately. I've used it with the Sony A100 and with the Sony A580.
645889
On my camera, I have to set the focal length and enable the exposure ring function when using this lens. Once complete, everything is automated but the focus.
1126947
I have this lens and like the wide-angle nice pictures it gives, but it does not have auto-focusing, you should focus manually. and I never heard about calibration (at least I never performed it) - just switched to M (manual) focusing when using this lens.
456872
For me, the lack of accurate focus was why I returned this lens. For many of my shots - nothing was in focus over the whole photo. It may work fine for some, but every iteration of this lens that I tried did not work for me. I recommend looking at the Tamron 10-24 f3.5 (further zoom, better aperture). I've been using it for 1.5 yrs & it stays on my camera as the default lens!
121338
I've noticed absolutely no difference in autofocus time. Also, the glass appears so much more clear to me than the cheaper brands. I'm guessing that's partially due to the coatings they use. Anyway, you should be very pleased.
1394504
In regards to auto-focus, it's very slow and very loud, but very, very accurate.
1566534
I love this lens and find it focuses quickly and is super sharp in good light, but I tried it out last week after dark at my son's marching band competition (HS football stadium lighting) and even wide open I found the focus speed slowed way down and I had far fewer "keepers" than I normally get in good light with the Sigma. My Olympus 12-40 2.8 PRO and my Oly 1.8 primes focus much faster in low light than the Sigma. I shoot with an OM-D with built in IBIS, and I used a monopod.