Since close up lens shorten the focal length of the lens, I would think the DOF would be greater than with ext. tubes.
BTW, I just got a 0.5 diopter CU to use with my 80-200/2.8 zoom. It allows it to focus as close as 3' instead of 6'. I can't wait to try it out. Ciao, Graywolf ---------------------------------------------------------------- ----- Original Message ----- From: <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Friday, February 15, 2002 3:39 AM Subject: DOF with close up lenses > I currently use +2 and +4 dioptre close up lenses. Naturally, the depth of > field if very shallow - but how shallow ? Do tables or formulae exist that > enable the DOF to be calculated ? > > Also, what is the comparitive DOF when using extension tubes or a 'proper' > macro lens ? > > TIA, > Geoff > - > This message is from the Pentax-Discuss Mail List. To unsubscribe, > go to http://www.pdml.net and follow the directions. Don't forget to > visit the Pentax Users' Gallery at http://pug.komkon.org . - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
