DPReview.com is closing April 10th - Find out more

55-200: Stabilization/blur issue on lower part of photo

Started Dec 20, 2021 | Discussions thread
OP Ali Senior Member • Posts: 1,969
Re: 55-200: Stabilization/blur issue on lower part of photo
1

Larry Rexley wrote:

It's may be some sort of rolling shutter effect, since you used the electronic shutter.

Even though each line of the sensor was 'exposed' at 1/1000 s, the total time for the entire exposure could have been much longer --- I think for the m6ii the electronic shutter readout time has been reported as around 47 milliseconds or around 1/20 of a second.

I've noticed taking images of moving trains with the M6ii and electronic shutter that the train can appear slanted even at higher shutter speeds (such as 1/500 or 1/1000s) due to its motion - as the sensor is 'scanned' top to bottom. If I pan with the train, then the train may be straight, but the background is oddly slanted. I've gotten in the habit of shooting mechanical shutter only for the fast (Amtrak) trains due to this.

Is it possible that you moved the camera vertically (perhaps 'dropped' the front of the camera down, thinking the 1/1000s exposure was done) before 1/20 of a second had elapsed? That might have resulted in some 'double' images near the bottom of the frame. With e-shutter, even though the shutter speed may be very fast, it's prudent to use camera holding technique as if you were shooting at a slow speed --- giving enough time for the full exposure to finish before moving the camera.

You might be noticing this only at longer focal lengths, as the higher magnification would magnify any camera motion.

Thanks for your thoughts - interesting... I haven't seen any pattern to the images with issues, and some have the issue, some don't, so what you say could be the case.

I had started off using mechanical shutter, but early on switched to electronic, not sure exactly when. I can't find a way to tell which images are which - does anyone know if the mechanical/electronic shutter info is captured in EXIF? That would help me confirm if it turned out I have none with issues before I switched.

 Ali's gear list:Ali's gear list
Sony Cyber-shot DSC-HX50V Olympus TG-5 Panasonic Lumix DC-ZS80 Canon EOS M6 II Canon EOS R5
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow