35mm drying film

Hi everybody,

I have a question about drying film, what is the maximum temperature to dry freshly developed film at best without damage? I use 35mm
any idea?

thx in advance

aneemany said:

what is the maximum temperature to dry freshly developed film at best without damage?

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+/- 100ºF (38ºC)

LAG said:

+/- 100ºF (38ºC)

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thx lag

Given that all the chemicals and rinsing water must be the same temperature (let's say the standard 68 F or 20 C), it is logic that your drying temperature should be the same when you start drying. When it would be much higher than the 68 of the rinsing water, you risk for film to have some kind of damage. It is the large changes that "shock" film.

Chemicals should always be precisely the right temperature. The final rinsing water can go a bit up, or a bit down, as long as it is a slow change. Find out what the temperature of your last rinsing bath is (the one with Photoflo, or something like that) and you should keep the drying temperature not far from that. It is why I always just hang my films in my darkroom where the temperature is around the 68 F . . . takes an hour or so for them to dry. Theoretically you can slowly increase the drying temperature, but what is the point?

In addition: film and photo paper tend to curl more when dried at high temperatures . . .

For me it's those hot summer days with the bathroom window open the quickest ever is on a line in the garden with the wind blowing and in the shade on one of those same summer days.........Until that cloud of dust happens to come by of course.

Having said that I never rush the drying I actually prefer a bathroom summer overnight hang, I have got it in my head that the negatives will be more scratch resistant.

It isn't so much about the heat, as it is air flow. The only time I ever needed to sped dry film was for a deadline. I prefer to leave my film at least 12 hours(give or take) at normal room temp, and allow the emulsion to properly harden before printing. In my experience, even though film feels dry and can be placed in a negative carrier for printing, the emulsion is still somewhat soft and runs the risk of scratching easily.

Hilo said:

Given that all the chemicals and rinsing water must be the same temperature (let's say the standard 68 F or 20 C), it is logic that your drying temperature should be the same when you start drying. When it would be much higher than the 68 of the rinsing water, you risk for film to have some kind of damage. It is the large changes that "shock" film.

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Respectfully I submit: Shocking the film with 90 or 100 degree air need not be a concern. Water shocking maybe a concern because it is 35 times more conducive than air. Set your dryer temp and go, the film temp will climb gently enough with out need to design some circuit that raises temp on a sliding scale.