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Jeremy Saint-Peyre

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About Jeremy Saint-Peyre

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  • Birthday 02/24/1987

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    too much to list, and mostly photo, so...
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    Darkroom Rat

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  1. Hello folks, I just got an email from Pro8mm that they do not offer the 24fps crystal synchro and max 8 film gate modifications. Do any of you know how/where I could get both done at once or separately ? In Europe if possible... Thanks very much Jérémy
  2. Yeah, me too, especially it went succesful before. I was suggested on an FB group and o Photrio as well that the bleach A and B concentrations are too high. Sulfuric acid should be at 1% and lowering Permanganate potassium to 2gr/L (or even less at 1gr/L) instead of 4gr/L for 5min... Dichromate are now forbidden to sell and/or to own du to toxicity in UE. That's why i got into de Potassium Permanganate/Sulfuric Acid bleach.
  3. Hello guys and gals, So, yesterday, while processing some Tri-X Super 8, something nightmareish happened during the second developpement after re-exposure : after 1 min in the 2nd developer (where the emulsion properly reacted and darkened), it slightly started to lift from the plastic and then it litteraly disloved into the developper : no floating gelatin flakes, just a plain black developer... The weird thing is that I already processed Tri-X this way, here is an example : https://vimeo.com/326184819 Here is my protocole, I have included as much info as I can : 1 – Soaking in a 25°C water bath. 2 – 1st Developer : Ilford Multigrad 1+9, 20min (continuous agitation on 1st minute, then 10sec each minute), 25°C. 3 – Hardening stop bath : Adox EcoStop 1+29 + 40ml/L of Tetenal Hardener. 6 min, 20°C, continuous agitation. (https://www.fotoimpex.com/chemistry/tetenal-hardener-to-be-added-to-the-fixer-or-stop-bath-1000-ml.html?cache=1564733928) 4 – Washing, runing water, 2 minutes. 5 – Bleach : Potassium permanganate 0,4% + Sulfuric Acid 10% equal part, 6 min, 20°C, continuous agitation. 6 – Washing, runing water, 2 minutes. 7 – Clearing bath, Sodium metabisulfite 6%, 2 min, 20°C, continous agitation. 8 – Washing, runing water, 2 minutes. 9 – Hardening stop bath : Adox EcoStop 1+29 + 40ml/L of Tetenal Hardener. 6 min, 20°C, continuous agitation. 10 – Washing, runing water, 2 minutes. RE-EXPOSURE : 2x1min 80W 1m in a white tank filled with water. 11 – 2nd Developer : Ilford Multigrad 1+9, 4min (stand), 25°C. The same solution I used as 1st developer. And that's where the emulsion dissolved.... Usually, after that, I use an hardening fixer for 5 minute, washing 10 min on runing water, rinse with distilled water, let it dry and digitalise with a Retroscann Universal. It's fastidious, but cheap ! Side notes : - Processing in Lomo Tank. - I know Ilford says not to use Ilford Multigrade for processing film (Universal PQ is recommanded instead), but through my test phase it was the only thing I had on hand, so I tried and it worked as you could see on vimeo. - I've never found any information about the shelf lif of the Tetenal hardener. As it is supposed to be mixed with Stop or Fix, I mixed it with the Adox Eco Stop to be sure I won't use an hardening bath tha is no longer working. Anyway, I mixed a new solution and it was still a disaster. - I use the hardener to compensate the softening of the emusion by the bleach. One bath before to strenghten, one bath after to reinforce. I thing the bleach isnt to blame, otherwise it the continous agitation in the clearing bath would have the same mechanical effect, so I guess it is a chemistery issue. The film is perfectly fine during re-exposure, bleaching is complete, after touching the film, the emulsion is normal. - I dont know why the developper is dissolving the emulsion on second use but work perfectly fine on the first one. So that's it, if anyone have an idea, i'm all ears ! Thanks ! Jérémy
  4. Thanks, i guess thoses ones work : http://www.wittnercinetec.com/epages/WittnerCinetec-Super8-16mm-Film.sf/en_GB/?ObjectPath=/Shops/WittnerCinetec-Super8-16mm-Film/Products/1132
  5. Hello, I recently bought 8 lomo relodable cartridge from Ukraine, and thoses acts as 64T/40D. One of them as a full film on the exposed side, and i want to process it ! Any advice on how to proceed ? I'll first cut a short strip to test it... Thanks, Jeremy
  6. Hello Werner ! We are not planing on selling it, it's for the lab member use, BUT : sharing is caring and once it is all set correctly we can share result, tips, "blueprint" (it's mostly DIY/hack in my kitchen). Some of the guys are electrotechnic engineer in CERN, so doing some arduino to control the motor is not a problem. I'm still perfecting the processing side and will do a pdf once it's reliable (may take some times) !
  7. Hello folks, I'm new on cinematography.com, i'm getting into super-8 as a member of an analog associative Photo/Cinema called ZebraLab based in Geneva : https://zebralab.info/. I am also a photographer by job. With the guys from the lab, we are/have built two machines to cut reels of Fomapan R100 DS8x30,5M to 4x S8x15M to be loaded in Lomo Reloadable Cartridge. That make it really affordable as we buy from Foma factory shop, we are around 7€ for the film and around 3€/film for processing (detail below). According to Super8Wiki, Lomo Reloadable Cartridge acts as 64T/40D -> http://super8wiki.com/index.php/Super_8_Cartridge_Notch_Ruler (down of the page). We would like to turn them into ASA 100, but we don't know wich notch ruler we should trust : - The one from Super8Wiki : super8wiki.com/images/6/6f/Cartridgenotchruler.pdf - Or that one who says the Super8Wiki notch ruler is not that good : http://www.peaceman.de/schmalfilm/super8/S8_Notch_Tools_v1.0.pdf We asume that : as the Fomapan R100 is black and white and that the contrast change induced by the CCA filter is not that big of a deal for us whe should turn the ASA 40D to an ASA 100T, thus cuting a filter notch down on the cartridge and enlarging the upper notch, correct ? Also, as several of us own (and ZebraLab also) a Canon 814 XL-S in working condition, we would like to give a shot at turning one of the cartridge to ASA 400, as the film stock can be pushed 2 stop during processing : we are processing black and white reversal with a mix of two method : Potassium Permanganate + Sulfuric Acid bleach and using a photopaper developper, as the emultion if soften by the bleach, we do hardening bath before to the bleach and one hardening fix bath after second developpement. The hardening concentrate is the Tetenal one (Aluminium Sulfite + Acetic Acid but that need confirmation). You can watch the result here on a Kodak Tri-X 200. (i found the result to be a bit too much contrasted...) But, according to the Super8Wiki notch ruler we are not sure that the Canon 814 XL-S can read ASA 400, even if it say so on different website (that would mean not a notch is pushed by the cartridge, 6 notches without the filter notch, and we tried cuting into an old K40 to make it ac as a ASA 400T but it doesn't seem to make a difference for the exposure sensor, that same camera read and exposed correctly the Kodak Tri-X 200 that you can watch on vimeo...). So : is it possible to turn a cartridge to ASA 400T (or around like a 500T), and would a Canon 814XL-S be able to read it, it can read Vision3 500T, so i guess yes, but how ? That's it for the moment, if you have solutions and/or questions, i'm up for it ! Bye, Jeremy
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