Originally posted by pschlute To be accurate you can influence the ISO in most modes by using exposure compensation, depending how you set the camera up.
Well in other modes you mostly influence other parameters first when using exposure compensation and AutoISO, and ISO itself only indirectly.
Originally posted by pschlute TAv mode is the only mode where you cannot do that. The whole point of TAv is the ISO floats. Having a control over ISO in TAv is nonsense
I have a use for that when I have minimum or fixed requirements for aperture and shutterspeed and want to influence the automatic metering in a certain direction which is faster than switching to M and figuring out exactly what the ISO should be. Av with AutoISO would sometimes choose too long of a shutterspeed before bumping ISO (that might change now that I have a K-1, but I couldn't set it to fast or slow on the K-S2) and I guess I don't trust the camera enough to choose the aperture I want in Tv.
Originally posted by pschlute True , but you are changing the exposure too.
That's exactly what I want to happen, and when I'm in TAv already it's faster to tell the camera that I want the scene to be darker or lighter than switching to M and figuring out the exact ISO value