So I have this setup for shooting seriously close-up macro: https://picasaweb.google.com/lh/photo/CIUtr5fsiR0rzShfFjE08NMTjNZETYmyPJy0liipFm0?feat=directlink That is: Camera / helicoid tube at 49mm / bellows at 137mm (approx)/ 12mm tube / 20mm tube / 36mm tube / generic reverse mount ring / D-FA 100mm macro at 1:1
I've been meaning to share this for a while, because the last time I tried using it in this configuration (sans rear cap on the lens, of course), I was unable to focus on anything. I had a little flower practically pressed against the glass at the end there but had to pull the lens' focus back about halfway before I could actually focus on it. So I'm hoping you guys can help me figure a couple things out: 1. Is it possible to have a lens so far away from the sensor plane that focus can't be achieved? 2. What's the macro ratio of this setup as it is in the picture? 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? John -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
