Eos 7d

Is this macro bellows working on a kit EOS 7D?

You can not http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=250617616998&ssPageName=ADME:L:LCA:GB:1123 run to the MP-E 65mm lens. It would be nice if it would work.

Hey, yeah. It seems to be a converter FD EF so it's good. The seller claims even use your 400D, then I guess it will work. 4x is much, but yes, the 1x-5x Canon is really impressive and expensive. Good luck.