> 1. Is it possible to have a lens so far away from the sensor plane > that focus can't be achieved?
yes. > 2. What's the macro ratio of this setup as it is in the picture? no idea. only way to know for sure is to focus an image and then shoot a fine ruler to calculate it. > 3. Does it make a difference if I have the lens reverse-mounted like > this rather than mounted normally on the last extension tube? > > 4. Would it be ridiculous or just silly to attempt to add more > extension in the future? I'd back off on the setup until you can focus on something first. Then see where you can go from there. The setup looks overly complicated to me. -- Godfrey godfreydigiorgi.posterous.com -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
