Are you experiencing this phenomenon with IBIS on your Canon EOS R5?

May 23, 2021
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I really think at 24mm 1/125 should be enough, especially with IS & IBIS, hence my assertion that there is an issue, I took 15 odd shots at 24 and 35mm at 1/125 to 1/160 and everyone is blurry. At 24mm one should be able to get sharp photos at 1/30, but as soon as you you get upwards of 1/200 the photos are sharp. So definitely something wrong.
 
May 23, 2021
6
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And if I put the EF 16 to 35mm L on my R5 with the adapter I get the same results, BUT if I disable IS on the lens the resultant shots are sharp, enable IS and shots go back to blurry at slower (1/125 or 1/160) speeds.
 

koenkooi

EOS 5D Mark IV
CR Pro
Feb 25, 2015
1,678
1,552
I really think at 24mm 1/125 should be enough, especially with IS & IBIS, hence my assertion that there is an issue, I took 15 odd shots at 24 and 35mm at 1/125 to 1/160 and everyone is blurry. At 24mm one should be able to get sharp photos at 1/30, but as soon as you you get upwards of 1/200 the photos are sharp. So definitely something wrong.
Be sure to try lower speeds as well, the 1/100s - 1/200s range is where virtuall all Canon IS systems fall down. Go slower and it's sharp, go faster and it's sharp as well.

Since I don't have any fast (brighter than f/1.8) lenses, I use either EFCS or ES which don't suffer from this phenomenon, only fully mechanical seems to.
 
May 23, 2021
6
0
Be sure to try lower speeds as well, the 1/100s - 1/200s range is where virtuall all Canon IS systems fall down. Go slower and it's sharp, go faster and it's sharp as well.

Since I don't have any fast (brighter than f/1.8) lenses, I use either EFCS or ES which don't suffer from this phenomenon, only fully mechanical seems to.
Yip, it was shutter shock, set shutter mode from mechanical to EFCS and all is fine, thanks. Pity though that mechanical is so dodgy at those slower speeds though...