Gear Talk > EOS Bodies - For Stills

Unreliable AF on 7D with FW 2.0.3?

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Hi all,

Before I bought the 7D, I had a 50D, and all my lenses focused perfectly with that camera body.

I recently updated the firmware on my 7D to 2.0.3. Was running 2.0 before (with no obvious issues).
Right away after updating I noticed that the AF had become very unreliable. It had a hard time locking and was hunting way more than before.

Especially with my f/1.4 lenses, a Sigma 85/1.4 and Canon 50/1.4, the AF is way off. The camera indicates that focus has been locked, but when I view the picture it is often very front focused. Sometimes though (about 10-20% of the time), the focus is spot on as it should be.
I also have a Canon 100/2.8 USM Macro and a Sigma 17-50/2.8 OS that show the same behaviour.

Actually, my only lenses that focus as they should right now are my Sigma 120-300/2.8 OS and Tokina 11-16/2.8.

I've tried using all the different AF-options, but nothing seems to help. I've reset the camera settings, done a hard reset, cleaned all connections between body and lenses.. Nothing has helped. It really seems like FW 2.0.3 is the bad guy here.

Has anyone else noticed this? It's driving me insane at the moment..

Haven't noticed that problem :o
Worked like a charm with 1.2.5 - 2.0.0 and now with 2.0.3.

I think you're on to something.  I'm having the exact same issues with all of my lenses.  I had actually thought it was the lenses as I purchases the 70-200 2.8 II and  Tamron 24-70 2.8 VC at roughly the same time I upgraded.  But I'm now seeing it with my trusty 24-105 and 50-500 as well.  Suddenly my images have gone to pot with focus.  As you mention, the camera claims it is locked on, but I can clearly see the image is not focused through the viewfinder.  Other times it appears focused through the viewfinder only to be out of focus on the larger computer screen.  It is a front-focusing issue.  I've tried micro-adjustments and such to no avail.  The problem does seem to be exacerbated by lower light. 

"Good" to hear that I'm not the only one experiencing this.

As you mention, I've also noticed that the view through the viewfinder seems focused, but when viewing it on the LCD, or a computer screen, it clearly is out of focus. It's like the AF changes during the duration of the image being taken. Really wierd!

I've also tried micro-adjustments, but it hasn't helped at all, because it is different with different lenses, at different apertures, and at different distances.

I've seen this issues in bright daylight too btw.

Is there any way to make Canon aware of these issues? Do they have some kind of reporting system?
Next week I'll probably send my beloved 7D to Canon for service, and let them know exactly what I've said here.

I also upgraded to the new firmware 2.0.3.  The last few times I have been out shooting with 17-55 and 70-200mkII, I have noticed that the green focus light seems to stay on or comes on instantly after pressing shutter button without finding perfect focus.  Just noticed some portrait images were not sharp around the eyes, but thought it was user error.  Using "one shot and spot center focus point, no filter."

I am going out today to study this further.  I had not given the problems from yesterday a lot of thought until I saw this post.


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