manual focus not working

  1. P

    NIKKOR AF-S Micro 40mm. Autofocus problem

    The lens itself is very good. I use it with the Nikon D3100 to do a lot of timelapse of flowers opening. That's from bud to fully open flower. A single session can take several hours so everything gets bolted down solid in a quiet room with no disturbance. Not much latitude for focal-depth so...
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