Macro extension tubes, where to find

[kriptap]

I shoot the Canon 20D in a housing for underwater use, I have a macro 100MM lens and wanted to know what kind of extention tubes I could get to get even closer. Does anyone know of a link where I can go to? Thanks

[sid]

Kenko extension tubes should work fin from what I've read here. Try these websites:
www.bhphotovideo.com
www.adorama.com

[ScottE]

The older model extension tubes cannot be used with EF-S series lenses. If you have a 20D or 350D/Rebel XT you may want to be sure you get the newer model of extension tubes Kenko is bringing out that are compatible.

Scott

[sid]

The older model extension tubes cannot be used with EF-S series lenses. If you have a 20D or 350D/Rebel XT you may want to be sure you get the newer model of extension tubes Kenko is bringing out that are compatible.
Scott
But since the 100mm macro lens is an EF lens, so the older Kenko extension tubes should work fine. Or am I missing something ???

[kriptap]

Thanks for the replies.

My last question is what is the best way to photograph a really small subject, like about 2MM to 10MM and still fill the frame. It also has to fit in my housing, so nothing really long would work, see my pics here: http://www.digitaldiver.biz

Thanks

[sid]

Well, a dedicated macro lens (the efs60mm from canon might be a good fit since it's smaller than the 100mm macro) and the canon close up lens and extension tubes will go a long way in helping with that.
EDIT: Just realized that you already have the 100mm macro :o

[wolf]

Wow, awesome images my friend.

Have you considered trying close up lenses? You would have more choice of distance to subject than with extension tubes considering the lack of space inside your housing.

Just a thought.

[ScottE]

But since the 100mm macro lens is an EF lens, so the older Kenko extension tubes should work fine. Or am I missing something ???

Only if you later get an EF-S lens and want to use an extension tube on it. For example, I just bougth a 10-22 EF-S lens and my Kenko extension tubes don't fit it. I don't use extension tubes on a wide angle lens that often, so I'm not upgrading, but if I was buying new I would be sure to get the newer model of tubes.

Scott

[DocFrankenstein]

Oh, another thing to bite myself in the bottocks over!

Got the old version of the kenko tubes last month. too late for an exchange... ggggrrrrrr!

[kriptap]

Thanks, I've ordered a Canon CAETEF25Q Extension Tube EF 25 II for my 100MM, lets see what it can do, I'll let you know. Thx

[kriptap]

Well it does great!

http://www.digitaldiver.biz/cpg/displayimage.php?album=lasthits&cat=0&pos=3