some macros

[caleb]

I have Kenko extension tubes and highly recommend them! with my 70-200mm lens the tubes "bend" a little from the weight, although they are fine with a 50mm.

This was taken with all three tubes from the Kenko set and a 50mm lens. Gold thumb tack and piece of hair

[mwfair]

I bought the kenko's as well and was using them with my sigma 17-70, I may try with my Canon 100-400L but the talk of the extension tubes flexing with heavier lenses worries me a little.