On Tue, 16 Oct 2007, Tony Duell wrote: Current "photography" teachers don't even know Scheimpflug's principle.

Is this edible? Or to use in the hair? (sorry, brazilian joke...) :o)

On 16 Oct 2007 at 16:55, woodelf wrote: If you've ever used a view camera, you'd know. Basically, the object that you're photographing is not parallel to the film focal plane. That means only one area on the object will be in sharp focus--the nearer and farther parts will be out-of-focus. You could stop way down, but that may not be practical or sufficient. So you tilt the film plane sufficiently to bring everything into focus. And with that, I'm through with the OT stuff on this thread. Cheers, Chuck

Sorry. Somebody pointed out to me that it was rather seriously off-topic.\ So, . . . If you are photographing a Vector Graphic, and you want to get both the screen and the keyboard in focus, you might not be able to stop down the lens enough to get the depth of field that you need. Or, you could tilt the lens and/or film plane of a "REAL" camera. If the object (microcomputer), lens "plane", and film plane are not parallel, you can get the distortion of focus that you need by having those three planes meet in a single line. Wikipedia's description is kinda adequate http://en.wikipedia.org/wiki/Scheimpflug_principle It is named after Theodor Scheimpflug, although he didn't invent it nor claim credit for it. "Modern" photography "teachers" often don't even know about lens and film plane swings, shifts, and tilts.

On Thursday 18 October 2007 00:45:34 Tony Duell wrote: I remember my father making a lens shift adaptor from a sawn-up extension tube and a short bit of car radiator hose. It worked fairly well. Gordon

Did I miss that ? Where? Paul On 10/18/07, Jay West <jwest at classiccmp.org> wrote:

That figures... But AFAIK it applies to _any_ camera, film or digital. So it should still be known and tuaght. -tony