topic ISO auto-changing / adjusting while in full manual mode on eos R in EOS DSLR & Mirrorless Cameras

ISO auto-changing / adjusting while in full manual mode on eos R

lmetz — Sat, 04 Sep 2021 20:01:20 GMT

Help!

Recently my eos r has been changing the iso on me even after I change it back. The camera is in full manual mode. HOW DO I GET THIS TO STOP. I have the range set to 100 - 12800 (I'm going to lower it) but I believe it's setting itself to even higher iso's despite this being the setting.

Is this an error or is there some sort of ISO over-ride I'm not seeing here?

Re: ISO auto-changing / adjusting while in full manual mode on eos R

Nick2020 — Wed, 08 Sep 2021 06:20:26 GMT

Hi lmetz,

Thanks for checking in with us.

The camera does have the safety shift feature which will adjust the ISO if the camera can't get a proper exposure. This feature is found in the Custom Functions menu, but it does not apply to the manual mode.

In the manual mode, I suggest that you double check the active ISO setting to make sure that AUTO ISO isn't active. Press M-Fn then turn the dial by the shutter to select a specific ISO level that isn't AUTO.

Re: ISO auto-changing / adjusting while in full manual mode on eos R

lmetz — Thu, 09 Sep 2021 14:54:14 GMT

Hi,

Thanks for your suggestion. Auto iso isn't active. I am manually changing iso and even hitting “lock” in hopes
of having it stay but it is still changing on its own. It is driving me CRAZY

Re: ISO auto-changing / adjusting while in full manual mode on eos R

ebiggs1 — Fri, 10 Sep 2021 14:35:59 GMT

"It is driving me CRAZY"

Well in my case it would be a short drive but what you need to do first is reset your camera to defaults settings. Menus, tools, clear all settings and clear all custom settings. If that does not fix it and you have not gone crazy call Canon. 1 (800) 652-2666

Re: ISO auto-changing / adjusting while in full manual mode on eos R

brylandphoto — Fri, 13 Dec 2024 16:38:25 GMT

This is happening to me too. ALL THE TIME! As a wedding photographer, I am often shooting in low light conditions during the reception. And sometimes the camera just decides to change the preset ISO to Auto. It has ruined so many shots when it decides to take the ISO from 1600 to 6400. Not to mention any moments that I potentially miss going into the menu to reset it. I have also tried locking the settings, but it still does it. This is a pretty serious problem that I think Canon needs to look into addressing in a future firmware update.

Re: ISO auto-changing / adjusting while in full manual mode on eos R

ebiggs1 — Sat, 14 Dec 2024 16:15:29 GMT

"In the manual mode, I suggest that you double check the active ISO setting to make sure that AUTO ISO isn't active. Press M-Fn then turn the dial by the shutter to select a specific ISO level that isn't AUTO."

. If that does not fix it and you have not gone crazy call Canon. 1 (800) 652-2666

Re: ISO auto-changing / adjusting while in full manual mode on eos R

brylandphoto — Sat, 14 Dec 2024 17:58:13 GMT

That is basically what I do every single time it does this and I need to reset the ISO. I go in and manually put it back to 100-12800.

Re: ISO auto-changing / adjusting while in full manual mode on eos R

Waddizzle — Sun, 15 Dec 2024 20:04:09 GMT

Please start a new thread for your issue. Please include more details beginning with your camera model.

It’s confusing when multiple people join a thread. By creating your own thread members can see the description of your issue at the top of the page.