Does this lens have a known problem with slow & inaccurate autofocusing?
1015516
I have had this lens for about 4 years and it focuses very fast and very sharp. No problems.Mike Michedl
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.
1015518
Hello Brian. I've had this lens for four years now, and while my copy has been beset with build quality issues, I can't complain about autofocus. It's not as fast as some of the newest SSM lenses, but it tends to be quick and accurate. You can always check other reviews here: http://www.dyxum.com/reviews/lenses/Carl-Zeiss-Vario-Sonnar-T*--DT-16-80-F3.5-4.5_review318.html
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
1247631
Probably not autofocus at least not reliability. You lose 2 stops and the D-7000 probably can't focus above F5.6
888895
I have not been happy with the auto focus. I have used this lens with both a cannon T3 and a cannon 70D. The problem is it will no come into focus. I have contacted sigma asking if there is anything that can be done about this. I have not yet gotten a reply.
788436
No, I love this lens. I havent noticed excessive vignetting, and it works fine in continuous auto-focus. I am shooting with a Nikon D300S and have been using the lens for a couple of months.
73691
I have to return mine, 'cause there was this "shifting" of the image in the viewfinder when pressing the shutter half-way down. I've learned that it is the autofocus locking-in on the target or subject and maybe that is the "clicking" sound that your hearing. I have a Tamron 24-70mm f/2.8 VC and 70-200mm f/2.8 VC in Nikon mount and I dont have this issue. Anyway I decided to return it because the "shifting" of the image is too visible for me and feel like the QC is subpar on this lens.Hope this help.
131464
The reviews I have seen (the in-depth for real ones, not the ones on sales sites) talk about the P80's lens slowness while trying to take pictures. I'm sure it's not as slow as the old (3-4 years ago) digital cameras but evidently it is a glaring issue in certain light situations. I am a Nikon shooter for over 30 years and have D200 DSLR now which I am very happy with, but I bought a FZ28K for a trip to Paris and am so far very happy with it. The iA mode is really pretty amazing - great exposure in almost all situations.
73693
I have probably taken over 1000 pictures since my purchase of lens. I have not heard this problem. Call Tamron and speak with them. This is the second one I have
606482
My shots are mostly very sharp, however, occasionally, this lens will just produce a clunker. However, I'm not sure its any worse than with some of the "L" series lenses that I've used, so I put it down to technology failure. I normally would attribute it to me, but there are times when I take a picture in noon daylight, standing still and its out of focus. That's almost impossible if you think about it.
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)
135752
Well, there are a few cons...the a6000 autofocus is insanely fast, this lens won't be able to keep up with it as you'd want too. You will also lose half to a full stop of light due to the translucent mirror from the adapter. The mirror is used to keep the autofocusing system working.Other than that, it's a pretty awesome combo. Looks awkward however.
1609778
Good timing on your question, because DPReview.com JUST posted their review last week on that lens:http://www.dpreview.com/lensreviews/tamron_70-200_2p8_c16/Optically it appears to be quite good. AF is slow and noisy, but for 694 bucks at Amazon you can't beat the price if budget is a concern.
872972
Not well quite simply. The maximum lens aperture is not a small enough f/stop number, you will lose autofocus and unless shooting in very bright light on high contrast subjects even manual focusing may be difficult.
1427426
No, this is a manual lens and I bought it knowing that, I have a D3100, too. My recent experience with autofocus 300mm lenses is their focus is spotty and they don't hold up well or for long. I think it has something to do with the size and weight of the lens, but that is my opinion. I decided it was better to go back to a two ring manual focus lens because they are reliable.
213967
Hi the autofocus is fast. This is a relatively fast lens. you can google to compare with the latest lens 58mm f1.4 which produces stunning shots. But this model of 50mm f1.4G is a good lens to use and nice bokeh. Generally no lens will get stuck. I reckon you meant hunting or trying to focus. Every lens has a min distance of focus. Like someone who is long sighted, if you are too close you will not be able to focus. I think this lens is around a foot distance. Check the specifications.
985640
Sorry, no. There is no mechanism for auto focus on this lens (difficult for this type of usage anyhow).
866884
I use this lens on my 5D Mark II with great success. Set the camera to AV mode for automatic exposure, works just like normal AV mode except you use the dial on the lens to set the aperture rather than the dial on the camera. TV mode isn't available. Manual mode obviously can be used as well. There is no autofocus, but focus is very forgiving. I usually flip over to LiveView for a few seconds to focus the lens. Even on a 5DII the lens is amazingly sharp, beyond what I'd expect out of most L series lenses. Sweet spot is around F/5.6 or so, but it's sharp as tacks all the way to 2.8. I use this lens regularly. I use this lens on my 5D Mark II with great success. Set the camera to AV mode for automatic exposure, works just like normal AV mode except you use the dial on the lens to set the aperture rather than the dial on the camera. TV mode isn't available. Manual mode obviously can be used as well. There is no autofocus, but focus is very forgiving. I usually flip over to LiveView for a few seconds to focus the lens. Even on a 5DII the lens is amazingly sharp, beyond what I'd expect out of most L series lenses. Sweet spot is around F/5.6 or so, but it's sharp as tacks all the way to 2.8. I use... » Read More I use this lens on my 5D Mark II with great success. Set the camera to AV mode for automatic exposure, works just like normal AV mode except you use the dial on the lens to set the aperture rather than the dial on the camera. TV mode isn't available. Manual mode obviously can be used as well. There is no autofocus, but focus is very forgiving. I usually flip over to LiveView for a few seconds to focus the lens. Even on a 5DII the lens is amazingly sharp, beyond what I'd expect out of most L series lenses. Sweet spot is around F/5.6 or so, but it's sharp as tacks all the way to 2.8. I use this lens regularly. « Show Less
585645
I think you are right here. I don't believe it is a lens problem as I have see this problem across a couple of lens. I did two things that seem to make a different, the first was I completely reset all the camera setting and second thing I did was up grade the camera fireware from version 1.0. 4. to version 1.0. 9. This seems to have made a difference.