Can anyone tell me if temperature of the film is a factor when exposing the film? I would think it might be. I'm in Florida at average 90 degrees this time of year. With film in the trunk in insulated cooler it still reaches upper 80's to 90. I keep it out of direct sun as much as possible to avoid even higher temps. I know it matters during development but am unclear and unable to glean any information on the web so far on exposure temperature. Data sheets for Delta 100 4x5 makes no mention of it.