Hi, In reply to Kencaleno- who points out
a) no DOF on lenses- true!
b) diffraction at small apertures- true!
However my illustrations were made to appear simple to explain the practicalities-
a) I do not object to you using DOF 'Preview' button if your camera has one? and
b) yes I prefer to shoot a couple of stops away from smallest aperture for sharpness however the increased DOF given by using a small aperture might outweigh the slight loss from diffraction. When you are out there taking landscapes nobody wants to be looking up the books for tables of numbers- its a subjective feel for understanding that focusing somewhere about the 'hyperfocal distance' you will get the maximum near & far sharpness in the image. Loving the discussion (for a newbie!)
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