Hello.

I am about to receive my new developing chemicals. I opted for the Ilford DD-X. I soon realised this is a quite expensive developer. So I will be changing to Ilford HC. I need to do some film testing to figure out which ISO/ASA/EI to place my Ilford Delta 100 at and the correct development time. I recently also purchased a 8x10 camera. I have a 4x5 camera. What I am wondering is if it is possible to use the same speed rating and development time for 8x10 film as for 4x5? Determining speed and development for 8x10 with 8x10 sheets will be immensely expensive, seeing I need a lot of sheets if I am to follow what "The Negative" preaches.


-Fredrick.