EOS R Image doesn't get darker or brighter in Av mode

[Twisted118]

So for some reason today in AV mode when I adjust the ISO or Fstop I don't see it adjust as I adjust it. Before today I can higher and lower the ISO and see the picture go darker or lighter... I'm really confused as to why suddenly it doesnt do it anymore ? 

For people that say you cant see the manual adjustment your wrong I definitely could see it as I adjusted 

Many thanks for the help 

Any help appreciated 

[deebatman316]

If Auto ISO is set you can't see it. Or if your using flash it won't work either.

[Twisted118]

Hi I'm sliding the iso bar back and forth and still not seeing adjustments ? 

[deebatman316]

Is exposure simulation turned on?

[Twisted118]

Yes it is and when it wasn't it wouldn't show in manual mode. And now it's on it shows in manual mode but still doesn't want to show in AV mode 

[p4pictures]

With exposure simulation on

• Manual mode - changes to shutter speed, aperture, ISO are reflected in the display as long as ISO Auto is not used
• M mode with auto ISO - exposure compensation will be displayed, changing the brightness of the screen.
• Av, P, Tv modes - changes to ISO are compensated by the camera changing one of the other parameters - eg shutter speed while in Av mode - and the displayed brightness is much the same
• Av, P, TV modes - changes to exposure compensation result in darker or brighter display to reflect the requested under or overexposure

Exposure simulation off

• M mode - no changes affect the displayed brightness 
• Av, P, Tv modes - no changes even exposure compensation affect the displayed brightness

If you use Fv mode, then it depends what of the possible parameters you are controlling.