Thanks for giving a link to the spreadsheet. I set the focal length to 90 mm, used blur circle = .1 mm, looked in the f/22 column. Hyperfocal distance is 12.08' as you reported. I set that in one of the focused distances, got near and far limits of DoF as 6.99 and 44.30 feet respectively for that focused distance. Spreadsheets are handy that way, one plugs numbers into the right cells and others recalculate to conform.
Schneider uses a blur circle, conventionally called Circle of Confusion, of 0.100 mm for 4x5. This will barely allow contact printing, won't allow enlargement. Remember that the amount of blur that can be tolerated in the negative depends on how much it is to be enlarged.
Do you have any books on LF photography or optics? If not, you'd do well to get at least one good book on LF photography and study them. You'll learn more from any of them than by asking questions here. The two that are most recommended here are Steve Simmons' Understanding the View Camera and Leslie Strobel's View Camera Technique. Both are available through sellers who list their wares on, in alphabetical order, abebooks.com, alibris.com, amazon.com, ... at very reasonable prices. Interestingly, the French LF forum recommends Jim Graves' A user's guide to the view camera.
I'm not sure which book on optics offers a good combination of price and usability. You might want to look for Arthur Cox' Photographic Optics. Rudolf Kinglake's A History of the Photographic Lens is sometimes touted here but the last time I looked it was hors prix. His Lenses in Photography might be helpful and less expensive.
Bookmarks