Odd IBIS result

[Tailwagger]

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I ran into a rather odd result from a couple of IBIS shots today.  I was rather precariously perched, so my technique was somewhat compromised. I wasn't all that surprised that some shots weren't usable, so I'm not blaming the camera.  As  hopefully can be seen below, the right 2/3rds of the frame were reasonably sharp, but the left 1/3rd is noticeably blurred. Not that I have any deep understanding around how IBIS works, but this struck me very odd. I would have thought the result would e consistent across the frame. Was curious if anyone else had seem something similar or if anyone had an explanation around how that might be possible. 

Here's the shot.  16mm f7.1 at .8 seconds.  Clearly DoF was not a problem 

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[jaapv]

It can happen if the motion of the camera is rotational.

[Stuart Richardson]

Thanks Jaap. I have noticed this as well. It seems to me that the stabilization is not as effective as I had hoped. I found a number of pictures that I took at 1/50th or so that showed movement. Many of these were in high winds, but I had hoped that the camera would be able to effectively stabilize in those situations.

[BernardC]

It's a common complaint with IBIS for all camera brands, so I'm not surprised that you see it with Leica's implementation. It's a lot more noticeable with video, where the corners of the image seem to flutter.

The workaround is to take multiple images and hope that they won't all be affected. There is no workaround with video, other than using a different type of stabilizer (gimbal, Movi, Steadicam, wooden plank, tripod, etc).

File under "no free lunch."