This was shot at f/5.6 and took 20 images from front to back. These seem to be harder to stack than some of the others I have done and took some practice.  Out of focus leaves behind my subject and out of focus highlighted water drops seemed to distort certain layers more than others. I tried a trial version of Helicon Focus, to see if that worked better than photoshop but liked the Photoshop version better, (Probably because I am more familiar with Photoshop). But for those wanting to try it, you can get a 30 day trial version of Helicon Focus online to try stacking images. I have to work more on my trial version to get more familiar with the program before I decide which is truly better.  They are fun to do and can give amazing results. Also try “Short” stacks of up to four images or even a 2 shot “Short” stack for added depth around your subject.