EOS R7 Help!!! What is wrong with the FPS on my electronic first curtain?
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06-25-2024
03:37 PM
- last edited on
06-25-2024
03:50 PM
by
SamanthaW
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06-25-2024 03:40 PM
Thanks for joining the conversation, heelfan78!
So that the Community can help you better, we need to know exactly which Canon camera model you're using. That, and any other details you'd like to give will help the Community better understand your issue!
If this is a time-sensitive matter, click HERE search our knowledge base or find additional support options HERE.
Thanks and have a great day!
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06-25-2024 03:42 PM
I am using the Canon EOS R7 and it is about a year old.
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06-25-2024 05:49 PM
Do you have the Anti-flicker shooting enabled in the red menu section?
Brian
EOS specialist trainer, photographer and author
-- Note: my spell checker is set for EN-GB, not EN-US --
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06-25-2024 05:54 PM
Hi Brian. Anti-flicker is Off / Disabled. Thank you for reaching out.
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06-26-2024 08:28 AM
Have you tried to do a test to confirm the slowdown, specifically in comparison with the same test using mechanical shutter mode?
By test I'm suggesting the following:-
- Manual exposure mode
- 1/125s, ISO 100, f/5.6
- Camera set to RAW only, not RAW + JPG and not writing to two cards.
- Lens set to manual focus
- High ISO noise reduction set to standard or off
- High speed continuous drive
- Simply hold the shutter down for two seconds
- Count the number of frames captured - doesn't matter about the content of the frame or even if the exposure is correct.
Under such situation mechanical and 1st curtain electronic shutter mode should both have around 30 frames saved for the sequence. I would use the rate or protect feature to mark the ending picture of the sequence before taking the next set. I expect 30 frames as both electronic 1st curtain and mechanical shutter should run at 15fps. If your camera really does give very different number of pictures then it sounds like a trip to service, if not then there's no problem as most of the settings will slow mechanical as well as electronic first curtain.
Brian
EOS specialist trainer, photographer and author
-- Note: my spell checker is set for EN-GB, not EN-US --
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06-26-2024 09:12 AM
Also turn off any DLO or other lens corrections.
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06-26-2024 12:34 PM
Good afternoon, Brian. Thank you for getting back to me and your excellent step-by-step guidance here.
I set my camera as you suggested. As a not, for the two seconds I did the "one, one thousand; two, one thousand" so the timing is probably imperfect. Here's what I got for two seconds:
Mechanical - 12 frames, 12 frames, 10 frames, 12 frames
EFC - 13 frames, 14 frames, 13 frames, 12 frames
Electronic - 26 frames, 28 frames, 28 frames
I took the pictures with a Canon rf 100-400.
As a note, I am on Firmware Ver 1.1.0.
Your thoughts and suggestions after seeing the results?
I am grateful for your assistance!
Battery = 90%
Brand new ScanDisk V90 card (nothing on it before shooting these images)
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06-27-2024 01:26 AM
Form those results it would appear that electronic first curtain and mechanici are basically operating at the same speed, so maybe it’s the different sounds that makes you think it’s shooting less frames. In mechanical the first curtain has to close then open before the second curtain closes to end the exposure, so two shutter sounds, with electronic first curtain the first curtain to start the exposure is not physically moved only the second.
Brian
EOS specialist trainer, photographer and author
-- Note: my spell checker is set for EN-GB, not EN-US --
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06-27-2024 03:18 PM
Hi Brian. I suppose that would seem reasonable that they would be the same, but the posted FPS is for 2 seconds - not one. Should the FPS be greater - twice as many frames as I got - for two seconds?
