Who, I�m not sure, but it�s probably the one that at first perceived a very interesting behaviour of optics, called then the Scheimpflug principle. In few words, it says that, if the plane of focus, plane of lens and plane of subject have a coincident point, i.e. meet in a place in space, the plane of the subject will be entirely in focus. It�s one of the reasons of using the standards movements of LF bodies. People took this knowledge for granted because, in the ancient world of daily work with view cameras, it was put in practice more often - and mainly by studio and/or landscape photographers.
Dear Rodolpho
Its something which anyone using a camera with 'movements' loves to have available. For those still wondering what the heck is the point of it let me add a few words.
If you want to achieve great depth of field at as wide an aperture as possible, by using this rule you achieve this by tilting the lens a precise amount. It is possible for example to have a point a foot away from the lens to infinity at wide open aperture, however the amount in focus height wise will be very restricted unless you close down. That's obviously an extreme case, but used in moderate amounts you can achieve a happy balance of lens tilt or swing of course, at moderate aperture to achieve overall focus, if that's what you need. If you use the back swings to alter perspective, then the same technique is used for controlling focus where you want it.
The camera that made this easy to achieve was the Sinar P with its swing and tilt axes remaining in the film plane...a beautiful camera to own and use.. Still using one I bought in the early 1970's on a daily basis, and it still works as sweetly and accurately as when new thanks to superb build quality and the built in adjustment points!
Cheers
Richard -- Richard Kenward Digital Imaging...Quality drum scans for professionals. See Labs section at www.prodig.org (and email for our comprehensive pdf)
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