Quote Originally Posted by Photo Engineer View Post
There is always the ambient temperature to consider. Presoaking tempers equipment and film to the right process temp.

That's a good point! To get around that I use a tray full of 70F water (my processing temp). As soon as I pour my 71F developer into the developing tank, and agitate for 30s, all but the lid of the tank is submerged in that 70F water.

With the roller base developing I use 72F dev, and I measure it at 68F coming out. On average it's 70F through the processing cycle.

I believe that as long as we consistently do it the same way every time, a small temperature variance is OK, as long as it's the same.