Will a extension tube on a Cannon 50mm 1.4 usm or on a Sigma 70-200 2.8, work as well as a Sigma 105mm 2.8 Macro lens ? Also cannon makes a M15-25 variable extender($80) which is less expensive than the ef25($120)also a life size converter($200).Does anyone have any experience with these ? Also front lense attachments ?

-- Dave Batchelder (Davebatchelder@msn.com), December 12, 2001

Answers

Perhaps some background reading would be a good place to start:

See Bob Atkins EOS FAQ at

http://bobatkins.com/photography/eosfaq/eosfaq.html

Note especially the section under Lenses pertaining to macro and close-up work.

-- Rod (rod.nygaard@boeing.com), December 12, 2001.

Also see here:

http://www.camera.canon.com.my/photography/film/index.htm

See links numbered 2: EF25 extension tube and 23: the 500D close-up lens. The Canon Malaysia site has some nice background features on a variety of topics.

-- Rod (rod.nygaard@boeing.com), December 12, 2001.