Quote Originally Posted by bascom49 View Post
<<< I have two 25 sheet packs of 8x10 HP5 PLus 400 film that expired in 2006. With the film I got two 8x10 cameras with lenses and maybe thirty film holders.>>>
Lucky Fellow!

Quote Originally Posted by palewin View Post
<<< I would take your outdated HP5+, find a scene with a reasonable range of zones, and expose 3 sheets: 320 ASA (my normal rating for fresh HP5+), 200, and 100.>>>
An alternative would be to pull the slide out 1/3 of the way, make your first exposure, take another 1/3 make the second and finally, all out for the 3rd. Like we do for paper enlargements... Of course you would want a stable scene for your test.