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  1. Re: Use of X-ray film: technical discussion with example images

    I don't think 5x7" xray film is available, but you can get 18x24cm or 8x10" film and cut it down to fit 5x7" holders. Of course there will be some waste.


    That depends on the camera. You may need...
  2. Re: Use of X-ray film: technical discussion with example images

    Haven't tried it I think, but it should work just like with any other film.


    He'll need a reducing back for his camera and appropriate film holders. With a bit of luck, the film will fit in 4x5"...
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    Re: Quarantine -> (mixed) chems

    In glass bottles filled to the rim and tightly capped C41 developer generally lasts at least 6 months, but usually more. Bleach is of no concern to begin with; it lasts more or less indefinitely....
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    Re: Quarantain -> (mixed) chems

    Nope. Properly stored, c41 chemistry stays just fine many months, so not a problem here. Plus, I find I have a little more time now to shoot.

    Lemons --> lemonade.
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    Re: New Bergger Print Film Question?

    The point of the Bergger product, the way I see it, is that due to its slow speed, it is more appropriate for use under an enlarger, as faster materials (e.g. 25-50 ISO ortho film) require very short...
  6. Re: Color print film C-41 kit (mixing question)

    This has been discussed many times, particularly on Photrio. I would suggest doing a search on Google to find some insights.

    In short, both of the options you mention are used by some, but the...
  7. Re: "contamination" between b/w and C41 chemistry?

    I use the same equipment for any process and any kind of solution, so no dedicated tanks or beakers for color/B&W, dev, fix etc. etc. I just rinse everything immediately after use. No problems at all.
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    Re: Mixing Paper dev help needed

    Yeah, that's very odd. I've never seen metol in solution go that color. It goes a pale straw yellow with time in a neutral to slightly acid solution, or brown in an alkaline solution.
    Your...
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    Re: Mixing Paper dev help needed

    Metol does not oxidize that fast in water, not even without any sulfite present. Are you sure it's distilled water and not battery acid you're using? ;)
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    Re: Back to basics - newbie developing help

    OK, center column = good.
    The reels you speak of I'm familiar with. They don't work perfectly for me. With some developers, I get uneven density particularly along the long edges of the film (where...
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    Re: Back to basics - newbie developing help

    You're using the center column in the tanks, right? It's part of the light trap and essential as such.
    Also do you store the loaded film holders for an extended period of time? If so, store them in...
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    Re: Mixing Paper dev help needed

    Yes, you can mix it all in one go, provided you use the developer up within a fairly short period of time and keep it stored in such a way that no oxygen can get to it (entirely full and well-capped...
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    Re: Easy alternative processes?

    Cyanotypes or Van Dyke Brown. The latter comes in nicely when you're done with blue and disappointed with trying to tone it to something else.
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    Re: Arista EDU Ultra 100 vs 200?

    I've not experienced QC issues with foma 200 in sheet film, but I won't buy it in 120 anymore. I quite like it in 4x5; true speed is around 125, long straight line, plays very nice with pyro...
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    Re: Lock 'n Load (practical)

    @6x6TLL indeed, whenever 120 gives me trouble, I also try loading it with the other end first, i.e. the end that is at the center of the core when the roll comes out of the camera. Usually that's...
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    Re: Lock 'n Load (practical)

    Snip the corners so that the leading edge of the film that goes onto the spiral has nicely rounded corners. This prevents the film snagging on the reel, which is the primary cause of problems loading...
  17. Re: Use of X-ray film: technical discussion with example images

    Well done, the image looks great! This certainly seems to be working very well.
  18. Re: Use of X-ray film: technical discussion with example images

    If that sky is supposed to be very slightly cloudy, then I think it looks great David!
  19. Re: Use of X-ray film: technical discussion with example images

    Try two agitation routines per minute and aim for as random fluid movement as possible.
  20. Re: Use of X-ray film: technical discussion with example images

    Very understandable. Agitation is key, in my experience. Too much and you get thick edges, too little and you get cloudy density variations. How do you currently agitate?
  21. Re: Use of X-ray film: technical discussion with example images

    Dave, that looks a lot better for sure! You may still have some irregular/uneven development going on there. If you have any on hand, try xtol or another low-pH developer; I find that makes it easier...
  22. Re: Use of X-ray film: technical discussion with example images

    Good luck. I've had a fair sharw of safelight fogging qith xray film myself. Most red leds are not safe enough due to a secondary emission peak in the green part of the spectrum. A dim red led with...
  23. Re: Use of X-ray film: technical discussion with example images

    Check your safelight; this may just be optical fogging of the film.
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    Re: Wet Plate Collodion - Alcohol

    I don't use that particular brand but something that is likely equivalent; 95% bio-ethanol. Works fine as far as I can tell.
  25. Re: Question about using gelatine for salt printing

    I never got satisfactory results with dichromate or digital negatives (same printer as you are using) with salt prints. The way to go are real silver negatives with very high density range. It'll...
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    Re: Salted Paper Prints - Technical Question

    I get the best results if I go inmediately from the salt application to the silver coating, drying the paper in between and afterwards with a hairdryer. I do not size the paper, which could make a...
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    Re: Proper Formula for Sodium Chloropalladite?

    Good catch Maris!
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    Re: Proper Formula for Sodium Chloropalladite?

    Correct.
    https://en.wikipedia.org/wiki/Sodium_tetrachloropalladate
    https://www.commonchemistry.org/ChemicalDetail.aspx?ref=13820-53-6
  29. Re: Question about using gelatine for salt printing

    I didn't notice this, but I generally omit the gelatin as I found it made virtually no difference at this concentration.
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    Re: Need help printing Carestream EB/RA

    @kludge xray film prints fine on VC paper. The blue base may increase contrast a bit, but it's entirely manageable.

    @Jim Noel: Ektascan BRA seems to work quite well at around 50-100 in my...
  31. Thread: C41 stand

    by koraks
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    Re: C41 stand

    Blackness of the frame/rwbate area is really a matter of digital post processing or exposure time when printing. If you have insufficient contrast for a good print (optical) with black rebate area...
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    Re: Vitamin C developer question

    I used the gainer vit C formula for a while on small format film. It worked, but it wasnt wasn't special. Looked a bit like a grainy d76 variant. Instant mytol is a vitamin C developer xtol clone...
  33. Re: SP445 tank processing Delta100 and Pyrocat HD help please

    Tabular grain films like delta and tmax generally stain a little less conspicuously than cubic/mixes "old style" emulsions, I find.
  34. Re: How to tell if metol (in powder form) has gone bad

    Light brown/tan should be fine.
    You may want to reconsider how you store it if it shifted much in color within 2-3 years.
  35. Re: SP445 tank processing Delta100 and Pyrocat HD help please

    The stain is very apparent if you hold two negatives side by side, one developed in a staining developer and one done in a regular developer. Looking at just a single negative it's quite easy to...
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    Re: Capacity of PC-TEA

    https://www.photosensitive.ca/wp/easy-film-developers
    The version I mix is basically the first Instant Mytol version on that page, but with the metaborate replaced by sodium carbonate & borax (which...
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    Re: Capacity of PC-TEA

    I've used that Gainer formula (the carbonate one) as well for a while. Until I found out that instant mytol gave me much improved performance.
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    Re: Idea for a thread on sharing image scans

    I get it now Steven, I misinterpreted your idea initially. Yeah, I think you're right - we'll probably not be able to concistently guess correctly how a result was arrived at exactly. I for one...
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    Re: Interesting idea

    ...appreciate the image for what it is, perhaps?

    I wouldn't want to rain on anyone's parade and everyone's entitled to a little puzzle if they like. But the thing with photo forums is that they...
  40. Re: SP445 tank processing Delta100 and Pyrocat HD help please

    Well this at least proves you can get from delta100 what you want. Now it's just a matter of figuring out how. Give it a try with the pyrocat, see what happens.
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