Developer Temperature Compensation Formula

[Paul Verizzo]

Wasn't there a NASA disaster after some of the team used metric (scientists) and others used US customary measures (aeronauticals) and someone was confused? There have been aircraft fueling mishaps for similar reasons.

Yes, indeed. I can't recall the specifics of the NASA mistake...I'm sure another reader will...but the aircraft fueling mistake resulted in a movie called The Gimli Glider. https://en.wikipedia.org/wiki/Gimli_Glider One of the most memorable movies I have ever watched, and not a whit of violence or gratuitous sex. Playing at a streaming site near you, probably. Good for the whole family.

 

[pentaxuser]

A very interestíng story, Paul, thanks for the link

pentaxuser

 

[Paul Verizzo]

A very interestíng story, Paul, thanks for the link

pentaxuser

I found an interesting link, "Thirty Years After Gimli." But that would give the story away.

 

[Paul Verizzo]

I found the movie on YT:

 

[pentaxuser]

A fascinating discussion. mainly in 2008 and between 2-4 of out "old stalwarts" but from a practical point of view of the average amateur home processor of film, what advice should we give the next newcomer who wants to know what time to give a film if the temperature is different from the standard 20C?

Do we advise that (a) he/she refers to this thread and draws whatever conclusions he/she feels appropriate but warning that said person better be good with algebraic notation and graphs and that the Ilford chart. Raph Lambrecht's chart etc are all far too simplistic to be of any use

or (b) unless the person is good at the material mentioned in (a) above then that person had better ensure at all costs that 20C can be maintained at all costs


Shouldn't someone also tell Ilford, Ralph etc that their charts are far too simplistic to be of any value

pentaxuser