I am in the market for some extension tubes. Since they are essentially open air spacers is there any benefit to buying Canon's extension tubes versus the Kenco offering? Thanks, Bob

-- Robert DiTommaso (newbabyd@yahoo.com), May 22, 2002

Answers

http://www.photo.net/bboard/q-and-a-fetch-msg?msg_id=000U XW

-- NK Guy (tela@tela.bc.ca), May 22, 2002.

Thanks for the link.

-- Robert DiTommaso (newbabyd@yahoo.com), May 22, 2002.

Tubes function as open air spacers, but some 25mm extension tubes have electronics:
Inside a Kenko 25mm extension tube

Others, like my Kenko set-of-3 extension tubes (12, 20, 36) only have a dull-shiny plastic baffle and straight-through electrical (not electronic) connections.

The Canon Extension tubes are much better made - with better anti-reflection control, nicer machining of the lens and camera mount, albeit at a higher price.

-- elan7e-owner@yahoogroups.com (Julian Loke @ .), May 22, 2002.

Overall, there is NO real benefit to the Canon tubes over the Kenko tubes.

-- Lee (Leemarthakiri@sport.rr.com), May 24, 2002.

I have Canon extension tube EF12 and Kenko set (12, 20, 36). I found Canon 12 and Kenko 12 is identical except for "Canon" mark and color of lens release lever. Canon EF12 should be made by Kenko.

I agree with Lee, Canon tube has no real benefit over Kenko tubes.

-- Ken Itoh (KEN@clara.oc-to.net), May 24, 2002.