topic Re: Locking F stop and Speed and letting ISO vary in EOS DSLR & Mirrorless Cameras

EOS R6 Mark II Locking F stop and Speed and letting ISO vary

Chuckwalla — Thu, 22 Aug 2024 14:55:54 GMT

Howdy, I am new to the Canon ecosystem. I am sure this is an easy setting but would like some input. Would like to lock the F stop and speed and let the ISO vary. Any suggestions? Thanks and sorry if its an easy question.

Re: Locking F stop and Speed and letting ISO vary

Stephen — Thu, 22 Aug 2024 14:16:16 GMT

Hey there!

Welcome to the Canon Community! So that you get the most accurate info, it's helpful to know which Canon camera you're working with.

Re: Locking F stop and Speed and letting ISO vary

kvbarkley — Thu, 22 Aug 2024 14:38:22 GMT

It is not an easy setting.

However, Ken Rockwell says that the R7 will do it in Fv mode:

Re: Locking F stop and Speed and letting ISO vary

Chuckwalla — Thu, 22 Aug 2024 14:51:34 GMT

Sorry about that EOS R6 MII

Re: Locking F stop and Speed and letting ISO vary

Chuckwalla — Thu, 22 Aug 2024 14:53:51 GMT

Very cool. Thanks for the help. I will give it a shot (literally) (BTW, EOS R6 MII)

Re: Locking F stop and Speed and letting ISO vary

ebiggs1 — Thu, 22 Aug 2024 14:55:10 GMT

Thank heaven for Ken Rockwell! 😊

Re: Locking F stop and Speed and letting ISO vary

kvbarkley — Thu, 22 Aug 2024 15:08:30 GMT

He says the R6II will do it, too. You might want to check out his usage guide:

https://kenrockwell.com/canon/eos-r/r6-ii.htm

Re: EOS R6 Mark II Locking F stop and Speed and letting ISO vary

p4pictures — Thu, 22 Aug 2024 18:34:03 GMT

You can use manual exposure mode, M on the mode dial, and then select the aperture and shutter speed you want, but leave ISO set to AUTO ISO.

If you really want to lock the shutter speed and aperture values, then use the multifunction lock and configure it to lock the main and quick control 1 dials. This will then stop you changing the shutter speed and aperture while the lock is active. Lock iOS the middle position on the power switch.

Re: EOS R6 Mark II Locking F stop and Speed and letting ISO vary

Chuckwalla — Thu, 22 Aug 2024 19:30:02 GMT

Thanks. Another great solution. Really appreciate it.