Winsor Crosby wrote:
> Probably it is not your software, but your lens. The popular thing to do with
> macro design these days is to change focal length with focus. I think it
> helps with that whole dual purpose idea. You know, sharp at
> distance and up close. Your results will probably be fine if you have an
> older macro without built in focus compensation element like the old OM 80/4.
>
While what you say is correct for many newer lenses, Chuck was using an
old MF lens with simple unit focusing via helicoid. So that wasn't a
factor in his trial. The calculation I just posted show considerable
change in magnification from the simple lens formula alone.
Moose
==============================================
List usage info: http://www.zuikoholic.com
List nannies: olympusadmin@xxxxxxxxxx
==============================================
|