bwana wrote:
The last lens in any configuration is the atmosphere! The more moving air, the worse the image quality!! To really see the problem shoot a video with that long lens, then sit back and watch the image roil, pinch, wave, etc...
Of course, one can use the approach astrophotographers use; shoot multiple subs and use software to pick the best one or do it manually. With a 600mm lens I would recommend 40-50 subs in order to pick that really good one.
bwa
Thanks for the suggestion but I cannot see this method working with moving wildlife.