08-08-2024 12:31 PM - last edited on 08-08-2024 12:35 PM by Danny
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
08-08-2024 12:38 PM
If Auto ISO is set you can't see it. Or if your using flash it won't work either.
08-08-2024 12:41 PM
Hi I'm sliding the iso bar back and forth and still not seeing adjustments ?
08-08-2024 12:43 PM
Is exposure simulation turned on?
08-08-2024 12:45 PM
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
08-08-2024 01:37 PM
With exposure simulation on
Exposure simulation off
If you use Fv mode, then it depends what of the possible parameters you are controlling.
08-08-2024 05:44 PM - edited 08-08-2024 08:21 PM
Hi and welcome to the forum:
The measure of exposure is given in Exposure Values or Stops, each being a doubling or halving of the light being transmitted. The camera meters the light from the subject and attempts to give the correct exposure based on what you tell it to change, using the three main control elements: Aperture (Av), Shutter speed (Tv) and ISO.
These three form what is called the Trinity of Exposure, they work together to provide the exposure with many variations in settings giving the same exposure, depending on the initial value you set, but with different impacts on other aspects of the image, such as how much is in focus (Av) , camera or subject movement (Tv), or noise and dynamic range (ISO).
The point of Av mode is to allow you to choose an aperture and the camera will choose one or both of the following based on what it things the correct exposure should be: The shutter speed and, If Auto ISO is active, also the ISO value. In Av mode, if I change the aperture by one stop then the metering system will compensate automatically with one of the other two settings to get the same exposure. You can reduce that set of variables to one, by turning off auto-ISO, and setting a numerical value, in which case the camera will change only the shutter speed to give the same exposure for any aperture value within the camera's limits. If you want to fully control both, especially to override the exposure set by the camera then use the EV compensation dial, or shoot in manual M mode.
If you are not familiar with the exposure triangle, then I recommend checking out some You Tube videos on the subject - there are heaps to choose from.
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