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Forum: General Discussion Sep 8, 2010, 8:42 AM
Replies: 59
Views: 5,691
Posted By VTphotog
Sorry, but I don't see any inconsistencies. If I...

Sorry, but I don't see any inconsistencies. If I shoot x number of exposures at 300mm F/4, and stitch them together to get a FOV equivalent to a 50mm lens, the overall picture has the DOF of the...
Forum: General Discussion Sep 7, 2010, 9:38 PM
Replies: 59
Views: 5,691
Posted By VTphotog
In effect, using this method, you are changing...

In effect, using this method, you are changing the film format to something a lot larger, thereby reducing DOF for the image. (85mm at f/1/4 gives you a very different look on MF than on 35mm)
...
Forum: General Discussion Sep 3, 2010, 9:44 PM
Replies: 59
Views: 5,691
Posted By VTphotog
Ah, since the example doesn't fit your...

Ah, since the example doesn't fit your preconceptions, it is invalid or irrelevant?
Ok, sharpen up the pinhole shot with a deconvolution routine - bring the Coc down to whatever you like - it is...
Forum: General Discussion Sep 2, 2010, 9:33 PM
Replies: 59
Views: 5,691
Posted By VTphotog
Still not convinced of Peripatetic's viewpoint...

Still not convinced of Peripatetic's viewpoint (pun intended).
Back to the pinhole camera - DOF for practical purposes, infinite. Photo has a large square object in the foreground, and another in...
Forum: General Discussion Sep 2, 2010, 3:32 PM
Replies: 59
Views: 5,691
Posted By VTphotog
DOF is a property of the lens focal...

DOF is a property of the lens focal length/aperture/and camera format. The use of CoC is a means of determining how rapidly DOF changes with respect to the focal plane. It tells us what the relative...
Forum: General Discussion Sep 1, 2010, 9:30 PM
Replies: 59
Views: 5,691
Posted By VTphotog
TCav has got this right - the DOF is determined...

TCav has got this right - the DOF is determined when the shot is taken. All you do by changing the print size, or viewing distance, is to change the basis for considering the circle of confusion.
...
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