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

May 23, 2021
6
0
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
0
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
1,919
1,860
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...
 
Nov 15, 2021
1
0
In March of this year, I bought an eos r6 with 1.4.0 firmtware and use ef lenses (16-35 / 4 L IS, 24-105 / 4 L IS and 70-300 / 4-5.6 L IS). The shots are unique and always in focus.

This week, however, I also tested the ef 24-70 / 2.8 L, which does not have an IS system, and noticed that the first shot in the series is almost always out of focus or shifted, and the next shots are sharp. I noticed the same problem with ef 85 / 1.8, ef 50 / 1.8 and ef 35/2 lenses, which do not have an IS system. The problem occurs if I have IS mode on / Still photo IS / Only for shot set on the camera. The shifted image appears both at long times, e.g. 1/15 second, as short, e.g. 1/1000 second. Apparently, IBIS starts too late, only during the first shot, when the shutter of the camera is already open, and in the initial start-up moves the sensor so that the image is blurred or. shaken. When it starts working, the following shots are sharp.

However, if I switch to IS mode on / Still photo IS / Allways, there is no problem and the first and next shots are sharp.
 
Apr 28, 2021
6
10
The known and verified issue was supposed to be fixed with firmware 1.4.0. Someone on the DPReview forum verified it for the R6 (see https://www.dpreview.com/forums/post/65299775). I have an R5 and verified that the R5's firmware update a few weeks later fixed the issue.

The known issue cause rotation in the corners. Typically the center of the image looks sharp, but the corners look blurry. It looks like the IBIS is rotating the image slightly. A quick way to check without having to download images:

  1. In the Play (blue) menu tab 4 set the Magnification (3rd item) to Magnification (apx) actual size from selected point
  2. Set the focus point to be one of the corners.
  3. Take picture(s) and then on playback on the back LCD use the magnify button. It will zoom into the focus point in the corner.