D
Doug Kerr
Guest
Meta.editorial™ A researched and evaluated contribution. 2006_opf_a0002
In connection with the use of a lens tilt capability to allow well-focused photography of an array of objects lying in a plane but not one that is parallel to the film (sensor) plane, we often hear reference to "the Scheimpflug principle" (or rule). This is said to state that all objects lying in a plane can be perfectly focsued upon if that plane, the film or sensor plane, and a plane through the lens all intersect in a common line.
In fact, that condition is only half of the requirement to provide proper focus across a plane. The second condition is articulated in another principle of Scheimpflug, one we rarely hear about.
I have just released to my technical information site, The Pumpkin, a new tutorial article, The Scheimpflug Principles, which discusses this matter in detail. It is available here:
http://doug.kerr.home.att.net/pumpkin/index.htm#Scheimpflug
Editors note: This post will, I believe, serve as an aid in understanding some of the rationale behind of altering plane of focus. It refers to a well-researched original article which appears to give proper attribution to its sources.
In connection with the use of a lens tilt capability to allow well-focused photography of an array of objects lying in a plane but not one that is parallel to the film (sensor) plane, we often hear reference to "the Scheimpflug principle" (or rule). This is said to state that all objects lying in a plane can be perfectly focsued upon if that plane, the film or sensor plane, and a plane through the lens all intersect in a common line.
In fact, that condition is only half of the requirement to provide proper focus across a plane. The second condition is articulated in another principle of Scheimpflug, one we rarely hear about.
I have just released to my technical information site, The Pumpkin, a new tutorial article, The Scheimpflug Principles, which discusses this matter in detail. It is available here:
http://doug.kerr.home.att.net/pumpkin/index.htm#Scheimpflug
Editors note: This post will, I believe, serve as an aid in understanding some of the rationale behind of altering plane of focus. It refers to a well-researched original article which appears to give proper attribution to its sources.
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