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Message: <blockquote data-quote="RJM" data-source="post: 1424224" data-attributes="member: 66340">Since the lens has 2-3 stops of stabilzation, you can use slower shutter speeds depending on distance to target. 1/125sec up to 1/250sec should be fast enough to freeze motion except with flight pics where you may need to increase to 1/1000sec or more depending on distance and bird size. Most of the time I shoot P mode with the D90 and let the camera automatically adjust ISO value and shutter speed for proper exposure. Using Auto D-lighting, the camera tends to overexpose to protect shadows. To save myself the effort of correcting exposure in processing, I will try adjust shutter speeds to underexpose by -2/3 if the conditions allow, making sure not to drop below 1/125sec if at all possible. If spinning the thumb/index finger knobs does not allow the changes I want, the lighting conditions exceed the cameras built-in metering/exposure routines and I will change to A, S, or M modes for direct control of the setting I want for the shot. Early morning and late afternoon or under any poor light  I increase base Auto ISO to 400.  Hope this helps,Rick</blockquote>