Upload & Sell: On
Tom, it's not a matter of sharpness, it's a matter of getting more of the subject in focus. Stopping down is fine, but with a macro lens shot from a focal distance of less then 24" you still have a very narrow DoF. In fact, it's approximately 2.11" and in the case of these orchids, they are approx. 4" front to back, and thats not including the back buds. The lens I am using is at its sharpest for this range at f/9 to f/11, so that reduces effective focus range....In general, if I back up to three or four feet, then yes, all of the orchid will be in range (stopped down with added light), but then I would have more than desired in the frame, which I would need to crop out...reducing the resolution that I want to achieve by stacking in the first place! Either that or I'm completely off base.