My final advice is that should you be troubled by the image not being """pin sharp".... It may be because the auto focus is being thrown off at the point of taking the picture by a branch or tuft of grass........therefore go into the auto focus " lock" settings in the D200 menu and select the option that delays the length of time that the autofocus needs to lock on to a new subject. What this means is that, if a blade of grass comes between you and that fantastic picture of the short eared owl in flight.... The camera won't focus on the grass but will stay on the owl until you have passed the blade of grass! The down side of this is that if you are focused on a near object...it will take a bit longer to come onto focus on the subject....time and experience will tell! Good luck!