Quote Originally Posted by Photo Engineer View Post

Just some thoughts on all of this recent activity. Mainly, who is going to "prove" efficacy of any old formula and who is going to point out which is most correct?

PE
Consensus, and an acknowledgement that when two or three versions exist of a formula, they are noted.

On that point Edward Lowe has D72 in his 1939 book with the rounded off weights, while you & I have the more accurate version in 1940's etc Kodak publications.

We have to take what a company publishes itself as Gospel. But there's a huge differance between a rounded off formula and an error, which of course can & does happen, typsetters made more before comuters

Ian