I just ordered some 100c for my dust-gathering Polaroid 180, from Calumet. B&W is back ordered they said. This is going to be fun.

More questions. Does the B&W produce a negative? is it any good? What are the exposure characteristics of these films? Are the 100s true 100s? I understand the color is more tolerant of long exposures than Polaroid. True? How long?