Film Temp

[clcolucci58]

My darktoom is in my basement and I keep my film that I have shot with my chemical on a shelve till I get to processing the film. I have three rolls to do but this evening I did some printing and a bit chilly in the darkroom 60 degrees chilly. Of course I warmed my chemicals to 68 but my question is come tomorrow night and I processe my three rolls at 68 degrees and the film being in the basement will be at 60 I would think and perhaps this may have some affect on the film durnjng develement or am I just over thinking.

Regards
clc
In a very cold Ohio😎

 

[noisycheese]

clcolucci58,

When you warm your chemicals to 68 degrees (I'm guessing you do your chem warming with a warm water bath), you can also pre-warm your develping tank and the film in it to 68 degrees, too.

Just put your developing tank with the film and reels inside it into the warm water bath with your developing chemistry.

Hope this will help...

 

[xia_ke]

I always do a presoak before developing in 68F water. I do about 60 sec of constant agitation, which gets rid of the anti halation layer and has the added bonus of making sure the film is at the correct temp as I usually store my film in the freezer. Searching the web will find many arguments for or against a presoak, but that's how I learned and it has always worked for me.

 

[Dwig]

...I keep my film that I have shot with my chemical on a shelve ...

This is a very, very, very bad idea unless the film is packaged in a totally airtight container. Chemical fumes will affect the film.

Anytime the film is at a temperature that is significantly different than the chemicals problems can arise. Overly cold film will slightly chill the warmer developer causing your development times to be off since you would be using a time for 68 degrees and developing at, perhaps, 65 degrees. This is a small error, but an error none the less, that will lead to slight under development.

 

[Roger Hicks]

I always do a presoak before developing in 68F water. I do about 60 sec of constant agitation, which gets rid of the anti halation layer and has the added bonus of making sure the film is at the correct temp as I usually store my film in the freezer. Searching the web will find many arguments for or against a presoak, but that's how I learned and it has always worked for me.

Ilford's Party Line on this is quite amusing. They reckon that in theory pre-soaks are a bad idea but that in practice they probably make no detectable difference.

Cheers,

R.

 

[Roger Hicks]

clcolucci58,

When you warm your chemicals to 68 degrees (I'm guessing you do your chem warming with a warm water bath), you can also pre-warm your develping tank and the film in it to 68 degrees, too.

Just put your developing tank with the film and reels inside it into the warm water bath with your developing chemistry.

Hope this will help...

This is the approach I use too.

Cheers,

R.

 

[xia_ke]

Ilford's Party Line on this is quite amusing. They reckon that in theory pre-soaks are a bad idea but that in practice they probably make no detectable difference.

Cheers,

R.

Sounds about as conclusive as any other conversation that pops-up regarding presoaking. I don't think I've seen a post yet that makes a conclusive argument one way or the other. Just a personal preference it seems. As I mentioned, that was how I learned so that is what I have always done.

 

[clcolucci58]

Thanks everyone very good info. Going to try the warming of the film when inside the tank. I do warm my chemicals in a warm water bath so I will do the same with the film/tank. Love this site always helpful info.
Regards
clc

 

[mwoenv]

Yes, if the tank/reel(s)/film are below 68F, your 68F developer temperature will decrease a few degrees and you will underdevelop. Pre-heat the tank with the film and reels to 68F, either separately or together with the chemicals, so you can process at the right temperature. Also place the tank in the water bath when you are not agitating so it doesn't lose temperature.

 

[rolfe]

Sounds about as conclusive as any other conversation that pops-up regarding presoaking. I don't think I've seen a post yet that makes a conclusive argument one way or the other. Just a personal preference it seems. As I mentioned, that was how I learned so that is what I have always done.

If you use a Jobo, one advantage of presoaking is that a 5 minute presoak pretty much exactly compensates for the faster development of continuous agitation. The result is that you can use times published for inversion processing with your Jobo. In fact, with my ATL-1000 there is no way to turn presoak OFF.

 

[clcolucci58]

This is a very, very, very bad idea unless the film is packaged in a totally airtight container. Chemical fumes will affect the film.

Anytime the film is at a temperature that is significantly different than the chemicals problems can arise. Overly cold film will slightly chill the warmer developer causing your development times to be off since you would be using a time for 68 degrees and developing at, perhaps, 65 degrees. This is a small error, but an error none the less, that will lead to slight under development.

Thanks I will store the exposed film on a different shelve or area of my darkroom

 

[icebear]

The ratios of the weight(mass) of the film that might be a little bit colder to the mass of the tempered chemicals is like 1 : 100.
How much do you think the chemical will be cooled by the film until they both reached the same level .... 67.8 or 67.5 deg.F ?

For an academic discussion it makes a nice topic, in reality it doesn't really matter all that much.😉

Just keep everything clean and rinse thoroughly that will make a positive difference in the stability of the developed negatives.

 

[Roger Hicks]

The ratios of the weight(mass) of the film that might be a little bit colder to the mass of the tempered chemicals is like 1 : 100.
How much do you think the chemical will be cooled by the film until they both reached the same level .... 67.8 or 67.5 deg.F ?

For an academic discussion it makes a nice topic, in reality it doesn't really matter all that much.😉

Just keep everything clean and rinse thoroughly that will make a positive difference in the stability of the developed negatives.

Dear Klaus,

True for the film. Not so true for the tank. It is an interesting exercise to take the temperature of the dev after you tip it out of the tank after development.

Cheers,

R.