Until now I have developed my 120-films in a Paterson tank and my 4x5" in a CombiPlan. I think I have good control over the devolping process using these tanks with standard agitation technique of ten seconds (three inversions) per minute. I have established both film speed and development times using Les Meehans method (http://www.zone2tone.co.uk/testingm.htm). I use mostly Fuji Acros, and in a week I am expecting my first shipment of Acros in 8x10" (Doesn´t that sound amazing!) to use with my recently purchased Calumet C 8x10 "Black beast".
I dont have a developing tank for 8x10" and for now I guess I will have to develop my 8x10 negatives in a tray.
How do I calculate proper developing time using a tray instead of a tank? Are there special tachniques you can use to achive descent negatives with traydeveloping? Maybe a method so I can use the same developing times as for my tank.
You have to excuse my bad english, I hope you understand what I mean.