09-24-2026 08:08 AM
Dear Canon Support & Product Development Team,
I am writing to submit a feature request regarding the video recording functionality on Canon #R6V #R6iii cameras.
Currently, when recording video in Av (Aperture Priority) or Tv (Shutter Priority) modes, the ISO setting is automatically locked to Auto ISO, without the option to select a fixed/manual ISO value.
For camera operators, videographers, and content creators, this limitation severely restricts creative control over exposure and noise levels. While Manual (M) mode is available, having the flexibility to lock a specific ISO value while allowing the camera to adjust only the aperture or shutter speed automatically is a crucial tool in dynamic lighting environments.
This is a feature that a vast part of the Canon video community strongly requests. We kindly ask Canon to consider releasing a firmware update that unlocks Manual ISO selection in Av and Tv video modes.
Thank you for taking customer feedback into consideration and for your continuous support of creative professionals.
Best regards,
Horia Ghimpa
09-24-2026 09:46 AM
Greetings ,
To make feature requests or to leave product feedback, please visit the Canon USA homepage and click on the ]+]Feedback link. Then select product. Depending on your browser, the link will be in the top right hand corner or bottom left hand corner of the homepage. This ensures your request makes it to the appropriate team for consideration.
~Rick
Bay Area - CA
~R5 C (1.1.3.1), ~RF Trinity, ~RF 100 Macro, ~RF 100~400, ~RF 100~500, ~RF 200-800, ~RF 1.4x TC, BG-R10, 430EX III-RT ~DxO PhotoLab Elite ~DaVinci Resolve Studio ~ImageClass MF644Cdw MF656Cdw ~Pixel 10 ~CarePaks Are Worth It
09-24-2026 10:50 AM
horiagh,
Just so you know, this site is made up of regular users, just like you. You might contact Canon Support or submit a Feature Request as Rick suggested.
Just as an aside, I have a T8i, and my camera behaves the same way. If you shoot video in Av or Tv modes, the ISO is automatic. You cannot manually set it.
Steve Thomas
09-24-2026 11:03 AM - edited 09-24-2026 11:05 AM
Have you tried FV mode? That might do what you want, since you can lock or modify any setting.
(oops, does not look like Fv is available in video modes)
09-24-2026 12:07 PM
“ Have you tried FV mode? “
I don’t think this camera has it.
09-24-2026 12:59 PM
TheR6 Mk III does, but only for still photos, not video.
07/22/2026: New firmware updates are available.
EOS R6 Mark III - Version 1.1.0
05/13/2026: New firmware updates are available.
EOS R5 Mark II - Version 1.3.0
EOS R6 Mark II - Version 1.7.0
03/17/2026: New firmware updates are available.
SELPHY CP1500 - Version 1.0.7.0
01/20/2026: New firmware updates are available.
10/15/2025: New firmware updates are available.
Speedlite EL-5 - Version 1.2.0
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Speedlite Transmitter ST-E10 - Version 1.2.0
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