Originally Posted by
Downrigger
To me, the sharpest focus is somewhere in the heart of the flower. Depth of field is a big issue with macro. It's hard to advise on this shot without knowing the meaning of the aperture given in the Exif (what's it equivalent to in standard DSLR architecture?). Controlling the depth of field is probably best accomplished by using a tripod and live view with magnification. Christina has an excellent, extensive thread on this, largely comprised of Mike Buckley's instruction, that would be very relevant to the problem posed here.