You enter the focal length that you're using, or one shorter than then one you're using, (I can't imagine that a longer length will give good results).
Bruce Dayton wrote:
>Hello John,
>
>So what happens when the lens is a zoom? Such as the A 70-210/4?
>What focal length do you put in?
>
>
>
--
Things should be made as simple as possible -- but no simpler.
--Albert Einstein
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