What is the difference between Canon's 250D/500D lenses and Canon Dipoters such as E -3.0 etc.? I tried to find some information on Canon's web site but was unsuccessful. Can the Dipoters be used for close-up photography?

-- Subbu Kalinathabotla (subbu.kalinathabotla@cellone-sf.com), December 10, 1999

Answers

I suspect the diopters you are refering to are for viewfinder correction, not closup work.

-- Bob Atkins (bobatkins@hotmail.com), December 11, 1999.

Subbu, have a look at - http://bobatkins.photo.net/info/faq30/closeup2.htm This is a pretty comprehensive paper (8 x A4 pages)of Q&A's relating to your subject. Answers were by Chuck Westfall (Canon USA - approx 1996). The 250D has a maximum working distance of 250 millimeters (where working distance is the nominal distance between the front of the lens and the subject). Hence, is much stronger than the 500D close-up lens, which has a working distance of 500 mm I think that the E -3 diopter can only be the "E" eye-cup dioptric viewfinder, which short-sighted guys, like me, would use. Not necessarily for macro work.............Regards

-- Garnet Cook (garnet_cook@one.net.au), December 14, 1999.