Locking Exposure in Manual

BadHorse

Thoroughbred of Sin
Mar 31, 2019
30
17
I have an aging 70D and I find shooting on Manual particularly tricky when I want to change aperture -- I always fumble counter-rotating the shutter-speed dial to keep my exposure constant. I'm considering upgrade options and wondering if there's a feature of a newer camera that makes this easier.

In my dreams I press the exposure lock button, spin the aperture control dial, and it changes the shutter-speed (and/or ISO) for me. (Curiously on my 70D pressing the AE lock button in Manual actually swaps the roles of my dials between shutter-speed and aperture).

I read about Canon's new Fv mode but as far as I can tell it's not at all what I'm looking for -- I want to lock in my exposure and then change Aperture and let counter-adjust the ISO & shutter-speed automatically. Is this crazy? Is there another way I should be doing this?
 

Mt Spokane Photography

I post too Much on Here!!
CR Pro
Mar 25, 2011
16,619
1,577
This sorta does what you are saying, but it does not seem to work except when your lens changes aperture or one of the other mentioned events. It only works in Manual. I tried it with my R and EF 100-400mm L II. As I zoom, it holds a constant exposure using the parameters I select to be variable.

exposure logk.JPG
 

BadHorse

Thoroughbred of Sin
Mar 31, 2019
30
17
Fascinating! I guess variable-aperture zooms are a very similar problem -- close but no cigar!
 

dcm

It's not the gear.
CR Pro
Apr 18, 2013
897
349
Colorado, USA
On my M6 mark II the exposure lock works just as you expect in Fv mode. I can change a setting and the remaining AUTO settings compensate to maintain the same exposure. This also happens when I'm not using exposure lock and don't change the scene since the metering will continue to be the same.
 
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BadHorse

Thoroughbred of Sin
Mar 31, 2019
30
17
On my M6 mark II the exposure lock works just as you expect in Fv mode. I can change a setting and the remaining AUTO settings compensate to maintain the same exposure. This also happens when I'm not using exposure lock and don't change the scene since the metering will continue to be the same.
Thank you for sharing this!
 
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