#3. "RE: Auto ISO and the D7000" In response to In response to 0 Sun 05-Dec-10 06:02 PM by agitater
The D7000 user manual is quite explicit in its explanation of Auto ISO and how it works. Apparently, the wise heads at DPReview don't even bother looking at the manual before criticizing a highly useful feature?
End users demand ever more complex features. So do reviewers. Then the reviewers complain that the features are not fully intuitively usable? This is foolishness, IMO, and DPReview should be ashamed of itself.
Auto ISO works like this:
Set the lowest shutter speed at which you're willing to shoot before ISO begins to automatically ramp up. Then set the ISO beyond which you don't want the camera to go (e.g., to avoid excessive noise). Then note that if the lighting conditions in which you make a shot are so dark that your preset ISO limit is insufficient for a usable exposure, the camera will still drop the shutter speed lower than your setting in order to get that usable exposure.
You still control Aperture and eV of course.
Once again, the shutter speed you select in the Auto ISO settings is only the trigger for ISO to start increasing. It does not mean that the camera won't slow the shutter even more if needed.
Don't confuse Shutter Priority shooting mode, with which you can lock the shutter at a certain speed (which may be what you should be using sometimes in conjunction with the settings in Auto ISO) with the shutter setting in Auto ISO - they're two different things. For example, if you never want to shoot slower than, say, 1/80s, then switch to Shutter Priority shooting mode and set that speed. If you then set the same shutter speed (or higher if you like) in the Auto ISO menu, the camera CPU will alter both aperture and ISO in order to get a shot in lighting conditions which demand more than the maximum ISO setting alone.
A complex explanation for a versatile and complex feature. DPReview is starting to irritate me. When Phil was running the joint alone, things were much better. The company's latest moves are, I think, a mistake.