Fallen Leaf: 27mm + MCEX-11

Christopher, this is a nice idea for a monochromatic image that can be improved.

Obviously the leaf was somewhat curled and so some parts of it toward the edges are visibly out of focus.Two possible remedies are as follows. If the leaf is fallen, one can place it flat on a window by holding it with some tape (of course, with the latter out of the framed composition). If the leaf is on a tree, things are getting much harder as one has also to fight possible wind gust, odd placement of the tripod, ... you name it. Anyway, assuming these are manageable, one could use photo stacking to get all portions of the leaf in focus. Photo stacking can also be used with the leaf on a window if this still has some curliness and one wants to avoid a too small aperture (to increase the DOF) where diffraction can kick in.

I really like the bright tonality of this leaf and I hope the suggestions above can help you to enhance the outcome.

Good advice, I was just holding a fallen leaf up to the light. The depth of field is so shallow with the macro tube! Focus stacking is something I'd like to experiment with, I've never tried it.