Where is the best source of a very high CRI F40T12 lamp, say like at ace hardware, home depot or lowes? I have a set of Reveal F40T12 lamps, but they have a lower CRI.
What do you need it for?
Get the Colortone 50 if you want to color match at D50. Get Daylight Deluxe (88 CRI) if you want to do it at D65. They should both be available easily.