View Full Version : Can we use Canon 12mm Extension Tubes with EF-S Lenses
leo11877
15th of November 2004 (Mon), 21:46
Hi
Can we use them for EF-S Lenses on bodies which do not take them in order to avoid the back element to touch the mirror???
http://www.bhphotovideo.com/bnh/controller/home?O=productlist&A=details&Q=&sku=300601&is=REG
thanks
leo.
blackviolet
15th of November 2004 (Mon), 22:07
it says that the version 2 physically fits/works with ef-s lenses. and i'm guessing the bit at the back is probably less than 12mm, if my memory serves...
F1_Fan
15th of November 2004 (Mon), 22:32
Hi
Can we use them for EF-S Lenses on bodies which do not take them in order to avoid the back element to touch the mirror???
The extension tube by design gives you more than enough mirror clearance. What does happen however is the back ot the EF-S lens hits the internal shroud in the tube (at least that's the case with my Kenko tubes).
timmyquest
15th of November 2004 (Mon), 23:08
Genius, i never thought of this...although i'm not all that sure how useful it would be.
tofuboy
15th of November 2004 (Mon), 23:31
Hi
Can we use them for EF-S Lenses on bodies which do not take them in order to avoid the back element to touch the mirror???
The extension tube by design gives you more than enough mirror clearance. What does happen however is the back ot the EF-S lens hits the internal shroud in the tube (at least that's the case with my Kenko tubes).
The Canon extension tubes accomodate the ef-s lens.. or so says the description for it. I would think it would work fine...
Tom W
16th of November 2004 (Tue), 03:48
OK, now somebody needs to come out with a 4 or 5 mm extension tube to accomodate the EF-S so that the lens is still close enough to the body to allow the hyperfocus at, say f/8 to reach to infinity. That would be useful for those 10D owners out there.
dhbailey
16th of November 2004 (Tue), 04:15
Help out a newbie here, please.
Other than accomodating lenses which don't fit, such as EF-S lenses on cameras not built for them, what use are extension tubes?
Do they change the focal length any, the way the 1.4x and 2x converters do?
Thanks for any help you can offer.
blackviolet
16th of November 2004 (Tue), 04:24
instead of multiplying the focal length like a teleconverter does (1.4x, etc.), they decrease your minimum focus distance to your subject.
so you can get up close and personal to objects - macro!!!
Tom W
16th of November 2004 (Tue), 04:52
instead of multiplying the focal length like a teleconverter does (1.4x, etc.), they decrease your minimum focus distance to your subject.
so you can get up close and personal to objects - macro!!!
Of course, that up-close capability comes at the expense of losing the ability to focus on distant objects.
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