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Canon R7 and RF 100mm focusing problems, it was good and now it's not

  
 
davholla
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p.1 #1Canon R7 and RF 100mm focusing problems, it was good and now it's not
This combination worked fine this was in flight

5T2A3059-CR3_DxO_DeepPRIME -1Hoverflyv3 by davholla2002, on Flickr



But now focusing is really hard - stationary photos are harder than the above- I haven't changed anything - or rather hadn't - I have now to fix it without success.

The limiter on the side is not the problem because I changed it



Any ideas?
Jul 09, 2026 at 02:58 PM
rscheffler
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p.1 #2Canon R7 and RF 100mm focusing problems, it was good and now it's not
So you're saying the camera/lens combo won't focus on anything? Not even a stationary subject?

In such situations, when you take a photo, is there a discernible plane of focus somewhere in the image? On the subject where it should be, but the camera is struggling to acquire or lock the focus? AI Servo or One Shot focus modes? Have you tried other lenses on the camera? Other cameras with the 100mm lens? Same results? Different results? If different, with which combination?

I think we need a more detailed description of what the problem is.
Jul 09, 2026 at 06:21 PM
davholla
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p.1 #3Canon R7 and RF 100mm focusing problems, it was good and now it's not
It will focus but it hunts a lt more than before.
I haven't yet tried different lens but will do, I don't have another r mount camera.
Jul 10, 2026 at 12:57 AM
 


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Uarctos
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p.1 #4Canon R7 and RF 100mm focusing problems, it was good and now it's not
Try another lens in your R7. Try your lens on another body and you'll figure it out yourself.
Jul 10, 2026 at 05:28 AM
MintMar
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p.1 #5Canon R7 and RF 100mm focusing problems, it was good and now it's not
Maybe you switched from focus priority to shutter priority?
Jul 10, 2026 at 06:42 AM
davholla
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p.1 #6Canon R7 and RF 100mm focusing problems, it was good and now it's not
MintMar wrote:
Maybe you switched from focus priority to shutter priority?


No, I reset all settings and it seems better now - but I need to test it more
Jul 10, 2026 at 08:14 AM


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