Jump to content

equivalent film area


Recommended Posts

I've searched for the answer to this, but I can't find it on PN or

anywhere. I'm trying to figure out the minimum E6 solution amount per

roll of Super 8mm film.

 

Kodak says to use at least 250ml of each E6 solution per square foot

of film. Then they say 235ml per two 136-36 rolls. That doesn't

compute, by my calculations.

 

I measured a 36 exposure length of 35mm film. It was 5.25 feet long.

35mm is .11 feet x 5.25 feet = .58 square feet. So 250ml x .58 sq ft

= 145ml, and two rolls is 1.16 sq feet x 250ml = 290ml. How did Kodak

get 235ml for two rolls? It's clearly more than one square foot of

film, and the minimum for one square foot of film is 250ml.

 

A roll of Super 8 film is 50 feet by 8mm = 50 feet by .0262 feet =

1.31 sq ft, which means 1.31 x 250 ml = 327.5 ml of each E6 solution

per roll of Super 8 film. But is it really correct, given the

unexpected recommendation for the 135-36 films?

 

This question is somewhat academic. There are no Super 8 films that

are processed in E6 chemistry. Also, my movie film processing tank

requires 1.4 liters for two rolls of Super 8mm film, so my real

minimum is 700ml per roll anyway. I'm just perplexed by the seemingly

inaccurate Kodak equivalents based on the stated 250ml per square foot

minimum.

 

I suppose if I could manage to process a roll of Super 8 film in about

300ml of E6 solution, that would be close enough for practical

purposes.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...