I have a Canon 60D and a Canon EF 20mm f/2.8 USM lens. However, I am unable to use it in auto-focus mode. I can only focus in manual. Why?
2043807
Hello! I have this same issue but with my Canon EF 85mm f/1.8 USM, so i guess uit was because the engine inside has a little problem and can only be useful in amanual mode. By any chance did you try to rotate the lens while you were on Automatic mode? Because that causes a rupture in the mechanism inside, if the problem is from the beggining then ask the dealer if it can fix it, otherwise use it in manual, it actually improves the quality pf the photos!
705037
The auto focus will not work. You must focus it manually. It is my understanding that the reason is because a Canon lens pulls power from the camera battery to work. So since there is basically a divider between the lens and camera with the adapter in place, it will not work. I understand that a company by the name of Red Rock makes an adapter for this, but it is expensive compared to this and it's also quite large in size. After seeing the large size of it and price, I didn't pursue it.
2010588
If you have certain lenses the focus ring pulls forward and back to enable Manual focus - if you can see a distance scale on the lens , you are in MF. And you might think AF doesn't work - just push the focus ring forward to get into AF
475200
I just received one of these today. There is no autofocus on the D60 for this lens, so you have to set it on M. Also, if you want the aperature to be set by the camera, you must lock the aperature setting ring. I've only been playing with it for a few minutes, but I've noticed you cannot always open the aperature to f/2.8 using the camera controls; sometimes only f3.3.
2207205
Auto focusing may not be possible with the 7D. For a definitive answer, recommend visiting the Canon USA website and downloading the PDF file for the EF 100-400mm II lens.
1190286
It works very well on the 60d. One thing to keep in mind though is it does not have autofocus if you plan on taking photos with it. You have to have a pretty good eye for focusing manually. Also this is a great lens for video, the manual aperture is really handy.
247255
The Canon EF 35mm f/1.4L USM works very, very well with autofocus. The USM is for "UltraSonic Motor," Canon's way of advertising their very fast, very quiet autofocusing system. One major advantage of USM is that you can still focus manually on top of the autofocus, in case the camera was looking somewhere different from where you were looking at. That being said, "Complete manual focus" just means that you can turn autofocus completely off, and switch to manual focus only. Even when you do that, the lens will still communcate with the camera, and you lose none of the features of the lens/camera system other than being able to completely control the focus manually. Hope that helps!
412230
Hello, the lens is manual, works manually only. Please put your camera into "no lens attached" mode and continue to shoot manually on in Aperture priority mode.Thank you.
611
It's for Canon FD mounts, The new ones are EF I believe. The FD lenses were discontinued in the early 90's.You also have to shoot in manual mode as autofocus will not work.
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.
980020
No, not in auto-mode. But you can fine tune the focus when you switch to manual focus on the lens, and you leave the camera set for auto focus.This is different than other Pentax lenses that don't have the switch on the lens, this may be due to the fact that this lens was built by Tamron. I don't find this to be a big deal though, and enjoy the lens a lot!
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.
1757527
Yes, you can use A mount lenses on an a6000 with this adapter.Yes and no on autofocus. You will be able to autofocus motorized lenses, but it is a very slow process. You won't be able to focus the screwdriver lenses which are made to be driven by a motor in the camera body. I manually focus all lenses on the LA-EA1.
38403
you can set it to auto or man its a switch on lens As for as usm its my understanding this is found on high price lens only
1239515
You have to use manual mode when using the telephoto lense it dose not have a focus motor in it
247257
Incorrect. This lens auto focuses!You can manually fine tune the focusing quickly with the manual focus ring if needed. "Many EF lenses are equipped with a ring-type USM which allows full-time manual focus in AF mode. This means you can manually fine-tune focusing as soon as auto focus is complete, without having to switch to manual focusing mode."-google
1447843
Yes, this lens is both auto focus and has a selectable automatic diaphragm. It can be used either as a manual selectable diaphragm as well as an automatic diaphragm when set on the "A" setting on the diaphragm ring. The auto focus is accomplished with a screw drive powered by the camera. It does not have an internal drive motor for the auto focus.