hi all

i live in (Bahrain-Arabian gulf)ok the tempreture reaches almost 50c. here in bahrain we cant get tempreture controll devices and i find it very difficult or imposible to control it by ice. is it ok to develope the film in high tempreture like 34-38c i know i have to decrese the time but i red somewer it is not recommended to develop below 5 minutes. at this temp.

-- hamad sharif (hamadshairf@hotmail.com), October 19, 1999

Answers

Response to tempreture control

Hamad

Look for a compensating developer, like Diafine. It does not act like conventional developers. You first soak the film in Solution A where the film absorbs developer according to the exposure you made. Then you transfer the film [without washing] to Solution B where the development proceeds to exhaustion of the Solution A which was absorbed. I don't think temperature would affect that process and thus you could still use the normal development time specified by Diafine [5 minutes in each solution as I recall].

Good luck.

-- Alec Jones (alecj@bellsouth.net), October 19, 1999.

Response to tempreture control

Hi Hamad

I've been experimenting with HC110 recently. I've found that dilution d (1+39) is less sensitive to altering development times than is dilution b (1+7). Since enzymatic reactions are faster in higher temperatures, diluting your developer may give you more latitude with your development times so that you won't blow out all the highlights.

-- Asher (schachter@a1.tch.harvard.edu), October 19, 1999.

Response to tempreture control

We have the same problem in Florida. I've switched to Ilford XP-2 film which is designed for (C-41) 100 degree processing. It's not the developer temperature that I worry so much about, but the warm wash water softening the emulsion excessively. Mitch

-- Bill Mitchell (bmitch@home.com), October 19, 1999.

Response to tempreture control

Hi Hamad, Here are things you can try - Develop only in the nights -Cool the dev,fixer,washwater in the refrig to 18 deg C -Study the temp rise with plain water and arrive at start temp -Use stock sol for min dev time -keep the tank in water at 20 deg c throught -Change the water if required Hope this helps Raj

-- K rajkumar (krajkumar@vsnl.com), December 11, 1999.