Hello:

My name is PhotoChief. I have a new digital camera. My question is about changing ISO and what happens. ISO is like the ASA film speeds. But, you have to change film to get a higher ASA and then have to compensate for this change by changing your shutter speed or f/stop (aperture). This is not the case when you turn a knob and change the ISO in your digital camera. What happens to these factors if you change the ISO on your digital camera?

Does changing the ISO on my camera change the other exposure parameters on my camera.

Example: If I change the ISO what does this change do to the Auto and or Manual settings of my camera?

If I change the ISO what does this change do to the aperture settings or shutter speed settings?

Does changing from auto to manual change the ISO settings automatically?

Does changing the aperture settings change the ISO settings automaticall?