#1. "RE: D-7000 and D-lighting" In response to Reply # 0
Active D-Lighting is always on in my D7000. I like the Low setting. The dynamic range of the sensor is already very good, so I feel the Low setting controls highlights and lifts shadows in just the right way for me. I think that no matter how we set AD-L, we still have to be careful about composition and ISO because AD-L doesn't change the sensors dynamic range or noise characteristics. It just manipulates the extremes of the exposure as data comes off the sensor.
AD-L works quite well. It doesn't directly affect resolution. My own results seem to show that it is especially useful when shooting JPG only. The result, for me, is that I spend very little time (if any) touchiing up levels and curves during post-processing.
There are situations in which the use of AD-l is inappropriate. For example, when shooting at an ISO of 1600 or higher, AD-L will tend to make shadow noise more visible.