What happens when I develop a film that I´ve shot in another speed than boxspeed?

Long title, sorry

I´ve a Fomapan 400 "action" and I´m shooting at boxspeed. Then I´ve a Fomapan 100 "classic" and I know that I can shoot the 100:ed at 400 instead of 100. Then I think that I have to develop it as a 400 film, or? What happens to highlights, midtones and shodows? and can I develop one 400 film shot at boxspeed and two 100 films shot as a 400:ed speed together???

Many questions, but I have a developingtank that takes three reels. And I spoke to a guy that I trust who ows a shop. He says that it´s easyer to develop three rolls instead of one roll.
Perhaps a stupid question, but as a newbie I´ve to ask to learn what to and not.

///Anders S

Dear Anders,

While you can get away with it, the developing times recommended by Foma for the films in question are different enough that you will get better results developing them separately. If you choose a midpoint between the recommended times you will probably need adjust your contrast when printing by a grade. That steals some latitude from you when you go to print a frame with low or high contrast due to the lighting in that scene.

Of course, I have to admit I've done just what you are suggesting and gotten away with it.

Good luck,

Neal Wydra

Neal said:

While you can get away with it, the developing times recommended by Foma for the films in question are different enough that you will get better results developing them separately

Click to expand...

I´ve got a developingtank that´s for one roll, but is it harder to develop one roll than three?

///Anders S

Regardless of how many rolls in the tank, it's best to fill the tank to its capacity with solution and reels. So, if you're processing one roll, you are using enough chemistry to do three. Other than that, it's not harder to do just one roll.
If you want to process films together that require different times in one tank, you can start the one that takes the longest then turn the lights out and put the other rolls in when it's time for them to start. This assumes you have another tank or other dark place the other rolls can stay in between.
Or else, do the first few minutes in the dark. You would put the developer in the tank first, in the light, then load the reels and put them in at the appropriate times. Once the last roll is in, put the lid on and complete the process in the light.

Its all fine and dandy to run one roll at a time, it just takes more time. It will probably save you some chems, if you only have two rolls, and a choice between a three reel tank and a singe reel, and need to fill the tanks to capacity in order to obtain quality results(dang I'm getting long winded in my old age). Otherwise, save all your film to process whichever ones are the same times together.

Rick

Thank you. I have a ASA 400 roll in my camera right now. Then I can develop that in my one-reel dev.tank and the other two(ASA 100) in the three-reel dev.tank!?

Does it matter if I develop two diffrent rolls from two diffrent companies? (Fomapan and Tmax). Both are the same speed (ASA 100)

///Anders S

if they both require the same time it isn't a problem, but you need to double check the specific times with your developer

You can check development times for many combinations of film and developer at this resource:

http://www.digitaltruth.com/devchart.php

Of course who knows, the charts may include mistakes and be incorrect, and you can always double-check with the information from the manufacturer. But the development chart has been very useful for me.

Erik Petersson said:

You can check development times for many combinations of film and developer at this resource:

http://www.digitaltruth.com/devchart.php

Of course who knows, the charts may include mistakes and be incorrect, and you can always double-check with the information from the manufacturer. But the development chart has been very useful for me.

Click to expand...

I´ve thought about it too, and I´m gonna look at it when it´s time to develop.

Thanks for great answers

///Anders S

AndersPS said:

Long title, sorry

I´ve a Fomapan 400 "action" and I´m shooting at boxspeed. Then I´ve a Fomapan 100 "classic" and I know that I can shoot the 100:ed at 400 instead of 100. Then I think that I have to develop it as a 400 film, or? What happens to highlights, midtones and shodows? and can I develop one 400 film shot at boxspeed and two 100 films shot as a 400:ed speed together???

Many questions, but I have a developingtank that takes three reels. And I spoke to a guy that I trust who ows a shop. He says that it´s easyer to develop three rolls instead of one roll.
Perhaps a stupid question, but as a newbie I´ve to ask to learn what to and not.

///Anders S

Click to expand...

Film is very forgiving to overexposure and very sensitive to underexposure. If you underexposed, you will lose shadow detail and extending development cannot rescue it. If you overexposed, develop normally and expect a dense but very printable negative, which needs an extended exposure time under the enlarger. Even if overexposed by several stops, it will have great shadow detail and hardly any highlight compression.

When in doubt, overexpose and underdevelop!

If you do it the other way around, consider it an experiment.

Dear Anders,

"I´ve got a developingtank that´s for one roll, but is it harder to develop one roll than three?"

I apologize for not responding earlier. As others have noted, one at a time is not more difficult, and only slightly more time consuming. A good thing about developing one roll at a time is that you will get more practice at all those little things that add up to a well processed negative.

Neal