I am trying to understand Mr. Lambrecht's enlarger height chart (thumbnail and link below). I had seen the man's name, but not who he is. NOW I know--he's the man. Ralph, you da man. Look at all the goodies on his site. Anyway, I'm not figuring out the height chart very well. I can't figure out why ther would be so many lines (curves, graphics) I get the horiz and vert axis, but not the rest of it. I'm an educated man, so anybody nudging me a little will make the light bulb in my brain flip on. This is going to be VERY useful. Thank you Mr. L.
http://www.darkroomagic.com/DarkroomMagic/Darkroom.html
Ooops, the thumbnail of the chard didn't copy, please go to the link and see enlarger height chart.