bull drink water wrote:
i have a cheaper one and got some good images.i've never had any doughnut holes. looking at the post above,i'd say if you get a good one you'll do fine.crank up the iso and go for it.search the web for a dof scale for a 500mm lens. saw one awhile ago but i can't remember where.
if you have an android smart phone there are free DOF apps available, Bob.