I tried. Without a delay, using Single Shot, I could not get a shot without blur at 1/8th of a second on a very good tripod and ball-head. I tried taking photos of a neighbor's Christmas lights at 1/8th of a second at 200mm . (I wanted 200mm to really see if there was any vibration happening with the timer.) Using one shot and pressing as lightly as I could, there was obvious motion blur. Five shots in a row with 2-second timer, all is fine.
I think you must have had great luck on the 80D. I'm not understanding the reluctance to just try a delay or a remote for 1/8th of a second?!? That would assure you the IBIS system, when turned off, is not malfunctioning, as you seem to worry is happening. Don't forget--I started this thread with testing IBIS, so I'm very open minded, but 1/8th of a second is pretty much, from my experience, mandatory delay or remote.
I think you must have had great luck on the 80D. I'm not understanding the reluctance to just try a delay or a remote for 1/8th of a second?!? That would assure you the IBIS system, when turned off, is not malfunctioning, as you seem to worry is happening. Don't forget--I started this thread with testing IBIS, so I'm very open minded, but 1/8th of a second is pretty much, from my experience, mandatory delay or remote.
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