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- เผยแพร่เมื่อ 8 ก.พ. 2025
- Video of me developing at home a roll of Kodak Portra 400 with a C-41 kit with the help of the Lab Box. (Not a tutorial, just for fun)
Developing kit and Lab Box by ARS-IMAGO (Schweiz).
Vidéo de moi développant à la maison un film Kodak Portra 400, avec un kit C-41 et à l'aide de la Lab Box. (Ce n'est pas un tutoriel, juste une vidéo pour le fun).
Kit de développement et Lab Box provenant de ARS-IMAGO (Suisse).
I love this video. Really great 👍
Hey man nice video cool how it turned out.
I would try making a waterbath though. Basically if you have a lot of water it takes longer to cool down. You can use this to your advantage to get more precise temperatures. C41 is sensitive to temperature changes so you want to minimize it for best results. With the sous vide you can make a big water bath and place the bottles with the chemicals in it while keeping it running. That way the water is in circulation and keeps the temperature even. Just waiting for the next chemical to warm up will make your temperature drop. keeping the box itself warm would make sense in theory. I just don't know how it's built and if it's waterproof.
Great video .. no fluff. straight to the point
Three comments for anyone planning to copy the process shown here:
1. I know that Cinestill says you can heat chemicals by directly putting their unit in the chems, but it is a terrible idea. These sous vide cookers are designed to heat a water bath in which the bagged food (or photo chemical bottles) is placed. Putting them directly in the chemicals greatly increases the possibility of cross-contamination, as well as just baking some of the chemical residue on the heating elements. You cannot take them apart to check status or clean if needed. Also, heating each chemical bath in turn as you process protracts the timing of the process and leads to timing errors. (You can dump out the developer, but the residue in the emulsion will continue that process while you are screwing around with the next solution.)
2. In the 35mm module, used here, there is a cutting blade to cut the loaded film end from the cartridge. When you wash film on the reel in the tank, with that 35mm module still attached, that blade is going to get wet. Surprise! It is not stainless steel. It rusts. If it rusts enough, it stops working. ARS-Imago does no repairs and provides no replacement parts if you want to DIY.
3. Flushing water from a tap into the top of the tank will not give an adequate wash, because the configuration of the reel (either one) does not allow adequate circulation. During the Kickstarter for Lab--Box, they planned to include a simple water tube which would clip down inside the tank to act as a washer. During development of the tank, that was dropped without comment, presumably because it did not work well. Better option: Use the Ilford Method to wash in the tank, as it is a fill, soak, and dump process. Or, pull the reel with film loaded and wash it separately in some other container.
Love this video - well edited. Great photos too
Nice! I was considering saving with a sous vide cooker instead of the expensive cinestill tcs1000, just wasn't sure yet. Thanks!
Yes it’s works just fine !
how long you can rotate the film to develop per chemical
nice!
What did you use to convert the negatives to positives?
In this case I used Silverfast :)
Do you have to do a rinse after each chemical treatment?
No, just after the fix ! and then stabilizer and that's it !
What's the shelf life of the ars imago C-41 chemicals like?
They said that you can develop 12-20 films in 5 weeks but I think you can use later that 5 weeks if conserves in dark bottles and maybe using longer developing time ?
What is the device for setting the temperature? I have always been convinced that the c41 process is very susceptible to hundredths of a temperature change.
Hello, yes it's important to have the right temperature ! Here I am using a device that is used normally to cook things under vacuum (sous-vide). You can search sous-vide cooking stick for instance ;) Mine is from the brand Proficook
Can you really take your time between the developer and the blix like that? I'm always concerned about not switching between chemicals fast enough.
I don’t really know...I just do it the fast as I can 😅
NEVER! Never, buy this thing i can't count 120 rolls i destroyed using this .
Sad to hear, never tried 120 roll tho.
been using it for 6 months now, developed more than 20 rolls of 120 film and not a single issue. Maybe you were doing it wrong?