Oops! Once I opened the book at the correct page, I remembered reading (or at least seeing) it before. Thanks for pointing that out, it was a good reason to re-read it. (As I often do with "random" parts of your book.)
Hi Ralph,
My Laborator 1000 (ancestor of the Durst L1200) can have the head tilted.
This moves the negative stage AND the lens stage. There is a contraption availlable into which one can mount the lens and tilt it regarding the lens panel;
This way you can move 2 planes out of three. If you need to move the easel, you've to have a set of shims on hand...
There are no scales on the tilt. Be it head, lens or easel ;-)
My Beseler MXV of unknown, but ancient vintage, which I modified with the newer lower bellows which allows lens alignment in all directions, coupled with the tilting negative stage in both directions allows Scheimpflugery to such a degree that the image is 'keystoned' to the extent it would only be useful on a construction site. I gave it up years ago and bought a view camera and a Rollei SL 66. I have always thought (when I thought about it) that you computer people could probably manage this without an enlarger. No?
I use the Phillips PCS 130 as diagram shows at top of page 2.
In camera correct looks less stretched so is better if you can do it.
There are two problems with any of these systems, focus and uneven exposure.
I first set up the print with a paper that has straight lines on it so I can see if lines are parallel. Then I focus on the sprocket holes by tipping the lens and then using the enlarger focus bellows. That way you get focus across the whole neg without stopping down. Exposure is solved by using a dodge card. Start the time covering the whole print and uncover the wide end first moving uo toward the narrow end.