Auto focus quit working
Oct 22, 2018 06:19:03 #
I have a canon 7D MK II with a Sigma 150/600 Contemporary lens and downloaded some raw images using the usb cord to my laptop and after I was finished discovered I now have no autofocus any any mode. Any ideas?
Oct 22, 2018 06:23:28 #
make sure the lens is in AF mode-not over-ride or manual. I have the same body and lens, and have found that when the lens is in manual over-ride, it will not AF.
Oct 22, 2018 06:25:14 #
RMcIntyre wrote:
I have a canon 7D MK II with a Sigma 150/600 Contemporary lens and downloaded some raw images using the usb cord to my laptop and after I was finished discovered I now have no autofocus any any mode. Any ideas?
First, have you tried a different lens to determine if it is the camera or lens?
Oct 22, 2018 06:34:26 #
Check the AF switches and try a different lens. Clean the contacts on lens and camera.
Oct 22, 2018 07:09:25 #
tcthome
Loc: NJ
If any of the above ideas do not work, try going from shutter button focus to BBF or visa versa. good luck.
Oct 22, 2018 08:03:49 #
RMcIntyre wrote:
I have a canon 7D MK II with a Sigma 150/600 Contemporary lens and downloaded some raw images using the usb cord to my laptop and after I was finished discovered I now have no autofocus any any mode. Any ideas?
Clean the contacts on the lens and make sure you hear and feel the click when putting the lens on the body. Try another lens.
Oct 22, 2018 09:08:15 #
larryepage
Loc: North Texas area
When handling a camera and lens to do out of ordinary things, it can be very easy to bump or change switches that you don't intend to. I'm not familiar with your system, but on my equipment, it is very easy to change the AF to a different mode without realizing what I've done. Now that I know, I am better at avoiding this, but it was not alsays so. (Several years ago, I was suddenly missing my focus assist light and finally figured out that I had switched to continuous focus mode, which does not use the light.)
Oct 22, 2018 09:41:27 #
RMcIntyre wrote:
I have a canon 7D MK II with a Sigma 150/600 Contemporary lens and downloaded some raw images using the usb cord to my laptop and after I was finished discovered I now have no autofocus any any mode. Any ideas?
First figure out if it is the camera or the lens.
Oct 23, 2018 06:11:40 #
I had a similar issue. After checking everything out it turned out to be a bad third party battery pack. I purchased the canon brand and had no issues since.
Oct 23, 2018 09:13:30 #
I had a similar problem with my Nikon d7100. I checked all the switches, tried a couple different lenses, both Nikon and, Tamron and Sigma. I would push the exposure button half way to focus, nothing. I sent it to Nikon and they did replace the focus motor. When it came home I checked it and when I pushed the exposure button the lens would move but it still looked fuzzy in the viewfinder. The pictures looked fine on the computer but not in the viewfinder. I called Nikon and I forgot that there is a little focus adjust control next to the viewfinder. All fixed now, I hope you get it fixed soon.
Oct 23, 2018 09:26:14 #
Mick 53 wrote:
I had a similar issue. After checking everything out it turned out to be a bad third party battery pack. I purchased the canon brand and had no issues since.
Interesting. How did you narrow it down to that? Trial and error or was there a reference to this problem somewhere that indicated the battery?
Oct 23, 2018 19:51:39 #
Thanks for everyone’s response. I had a friend try it on his 6D and it will not autofocus on his either and his lens works on my 7D II. I am going to send it to Sigma for repair.
Oct 24, 2018 06:10:19 #
dsmeltz wrote:
Interesting. How did you narrow it down to that? Trial and error or was there a reference to this problem somewhere that indicated the battery?
After taking it to a few camera shops and having no luck I called Canon. They told me to take the battery pack off and put in a single battery. After this, I had no problem with the autofocus. I then ordered the Canon battery pack from Canon.
Oct 24, 2018 07:54:07 #
Mick 53 wrote:
After taking it to a few camera shops and having no luck I called Canon. They told me to take the battery pack off and put in a single battery. After this, I had no problem with the autofocus. I then ordered the Canon battery pack from Canon.
When all else fails, ask. Or read the manual. Both are things that I have occasional problems doing.
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