YashicaFX2 wrote in post #16390362
TeamSpeed, if I read his post correctly, got it just about bass-akwards. An Iv mode would allow you to fix ISO, much like Av allows you to fix aperture, and float the other two values. The only way that would work is in a M-type mode, but then you are COMPLETELY manual, or in P-type mode which shifts exposure with the front dial and sets EC with the back dial. And that is already possible.
I never suggested that my way was ideal, or that Canon does not need to ponder this complaint. My response was to those who believe that there is no way to use EC and auto-ISO together. That capability has been with us the whole time everyone's been complaining about the lack of it.
Nobody is saying that you cannot use Auto ISO and EC together. You can use Av and Tv as well to do this, and with bodies that allow you to set min/max shutters, for example, then Av with auto-ISO with EC is usable. Or you go to Tv and set your shutter speed, and then use EC with auto-ISO, and supposedly the camera raises the ISO first, then aperture second if it runs into trouble. The problem is how trustyworthy is that? It works, but is not bulletproof, I have tried all the different methods. I have given up, and I just set the ISO to a value I know I can deal with and then work on the other two factors.
Iv, as you explain it would be backward, however, who's to say how Iv works? Iv mode, in my definition, would mean that ISO is locked into auto-mode, and you set EC for that, but you control aperture and shutter speed. Sure it would be different than Av and Tv, but who cares? It would just be another mode on the dial that does "something" and that "something" doesn't have to mimic the other dial settings. You need to think outside the box a bit.
Then manual could be put back to the purist view that you control all 3 values, and auto-ISO wouldn't even be selectable in that mode, and the exposure meter is truly what the camera thinks your exposure is going to be. This would stop the bickering about M being manual and the computer shouldn't think for you at all in that mode, and also address how the metering gauge in the viewfinder is supposed to play double duty as showing you what it thinks your settings are going to do vs exposure compensation. Unfortunately, Canon won't introduce a new mode dial, they will just "enhance" the auto-ISO setting in M mode so that there is some sort of button sequence that allows you to set EC. However, I am curious how this is displayed to the user using the conventional exposure meter in M mode vs the exposure compensation meter in the other modes.
Your method would completely not work for what I shoot, P mode during sports absolutely stinks, period and throwing it into auto-ISO with EC wouldn't help one iota. We have discussed this topic to death, and you are not the first to point out crippled methods that auto ISO exists with some form of exposure compensation.
Is there a reason for being so accusatory and argumentative? It just seems strange as this is a need that exists on other bodies, and Canon has had about 4 different iterations of auto-ISO, all of which have been crippled in one way or another. You don't have to defend Canon by saying our stated needs are unnecessary because you have found a crippled way to make this work for what you shoot.