I have been trying out the software Helicon Focus, and I am delighted by my first results. Here are some examples from the last couple of months using spring flowers and blossom from our garden.
These were all taken indoors under studio conditions with controlled light: as much as I would love to have photographed them in their native environment, the wind was simply blowing too much for this. The lens was the 60mm AF-D micro-Nikkor, an older lens, but extremely sharp, and a perfect focal length for flower photography on a crop-frame (DX) sensor.
|Flowering blackcurrant (Ribes)|
For the last example, the flowering blackcurrant, I actually did a focus series all the way through both flowers. But after stacking the whole lot, the appearance of both flowers fully sharp looked simply unnatural, and there was no way for the eye to settle on one or the other. So I simply stacked the front flower, and left the rear one out of focus - I like the resulting look.