How many exposure on 120 roll with 6x6

Hello,

For my calculation of long term film and processing cost, I need to

know how many exposures can be made with the 6x6 format on a 120 roll

film.

"120" implies 120cm in film length?

Thanks in advance.

12

The "120" is just a numerical designation - I doubt if the people at Kodak were even aware of the metric system at the time. They designated their films with seemingly random numerations (116, 120, 126, 128, 220, 620, 628, etc...) - I'm not sure that more than one or two of them could actually be explained. There's no logic behind it as far as I am aware.

Jackson- you get 12 exposures shooting 120 film 6x6. 24 for 220 film.

The designations of Kodak films were simply consecutive numbers and had no relation to film length or image size. The numbering began near the end of the nineteenth century (1895, I think) with number 101 and continued up till about 1916 when number 130 film was introduced. Size 220 was introduced in 1965.

That would place #126 around 1914 I suppose?

Just another view, If I�m not mistaken the length of 120�s is 80cm (I�m guessing after having struggled at first endlessly in the dark trying to load my reels) and the width around 7cm, that would give you about 560 cm^2 of film of which 5.6*5.6*12 = 376 cm^2 about is exposed(to what extent?). The remaining area is what you�d definitely fix, depending on emulsion � developing is another story. I�ve seen formulas for per cm^2 chemical load but working out your processing expenses would be splitting hairs a bit, unless you�re thinking of developing heap loads for an average subject. When budgeting I�d rather start at the type of chemicals you use and the way you use it.

Do I detect a slight snide tone in Wayne's comment about 126 film? As it happens, Wayne, you may be right on the money with your guess as to the introduction date of 126 film. However, the size was discontinued shortly after WWII. In the early sixties Kodak introduced Instamatic cameras with 26.5mm by 26.5mm images and they re-used the designation "126" because that was the size of the images on the original 126 roll film.

Where does all this leave 828

Regards

Old Person follically chalenged

Why, 828 is a film of the future, of course ! ;-)