The film footage calculated on the order form is just an estimate based on the reel diameter. We will measure the exact footage and adjust the total appropriately. We do not charge for blank or black film. All film is returned.

		Approx Run Time (hh:mm:ss)
Reel Diameter	Feet	8mm	Super8	16mm
3"	50	3:30	3:00	2:20
4"	100	6:60	6:00	4:35
5"	200	14:00	12:00	9:10
6"	300	21:00	18:00	13:45
7"	400	28:00	24:00	18:20
8"	600	NA	NA	27:30
10"	800	NA	NA	36:40
12"	1200	NA	NA	55:00
14"	1600	NA	NA	1:13:20
15"	2000	NA	NA	1:31:40

Some of the Kodak yellow boxes say 25 ft on them and it can be confusing because there is actually 50 feet on these reels. Most of the boxes actually say 25ft of a double roll. Usually the words "double roll" will be right under "25ft" or might be on the other side of the box. When the film was purchased, it had 2 25ft rolls in the cartridge. You shot one 25 foot roll and then took the cartridge out, turned it over, put it back in and shot the other 25 feet. Kodak returned the processed film on one 50 foot reel in the same box you purchased the film in. So, this is why the 3" reels have 50 feet on them even though the box says 25ft of a double roll.