I think you'll find that the total DOF is more closely approximated as
1/3 in front of and 2/3 behind the main point of focus. You can use
this to advantage but, if there's some particular point that should get
all the attention, you may want to focus critically on that spot
regardless of how the DOF pans out. Keep in mind also that sharpness is
a continuum.
Chuck Norcutt
Moose wrote:
>
> 2. It appears that you haven't used the DOF to best advantage. DOF
> extends both forward and back from the focal plane. It's not quite
> symmetrical, but pretty close. It appears clear that the closest point
> of the flower is in focus and the sharpness gradually decreases with
> increasing distance from the lens.
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