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    Re: contact printing ??

    In addition to what the others said, start by conducting a safe light test to verify that your safelight doesn't fog the paper and doesn't reduce its contrast.

    And yes, multigrade / VC paper is...
  2. Re: How to clean mould/fungus off a Cibachrome print

    When in doubt, try distilled water first, using a cotton pad or q-tip, or better: a lint-free cloth.

    I don't think isopropanol will melt the emulsion. It's gelatin; alcohols don't melt it.
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    Re: Zone VI Type II 8x10 VC Head Problem

    > I did not see any damaged parts or wires or anything out of the ordinary on the circuit board.
    Doesn't surprise me; there's many failure modes that don't involve any visible signs to the PCB or...
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    Re: Push/Pull processing if Scanning Negative

    Pushing and pulling are conceptually different (but share many similarities with) the use of a personally determined Exposure Index (IE), which again is different from expansion and contraction in...
  5. Thread: Probable Goof

    by koraks
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    Re: Probable Goof

    If you're confusing yourself as you're confusing me by thinking in terms of exposure as 'darkening' and 'lightening', I can very well imagine you're scratching your head most of the time when you're...
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    Re: Status of Kodak RA4 Paper in 2022

    AFAIK SinoPromise, the current manufacturer of Endura paper, is in dire financial straits. I do understand that Kodak chemistry has started to reappear on the market and this should also be...
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    Re: Paper developer question

    Washing soda is generally sodium carbonate. You'll have to figure out if your particular washing soda is monohydrate or decahydrate. There are ways to do this; just google. Photographic formulas...
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    Re: 510 Pyro - First Impressions

    Yes, that'll work fine. You don't really need to use an alkaline or neutral fix; an acid fix will work just fine and the pyro stain really won't be gone.
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    Re: Unidentified Problem - Need Help!

    @ic-racer my post was in reply to the one above it. Read it in its context and it does make sense. Have a look.
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    Re: Unidentified Problem - Need Help!

    Not only that, there's no way a pinhole projection would ever come even close to matching the scene's brightness.
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    Re: Need somebody to repair a Durst EST 1000

    Maybe post in the WTB section?
    Or something silly like Craigslist?

    With a schematic at hand and a general explanation of how everything is supposed to operate, any electronics enthusiast with...
  12. Re: 135mm Schneider Componon Enlarger Lens Mount Size?

    I don't have all that much experience printing with PLA; I pretty much instantly moved over to PETG because most of the stuff I ended up printing needed to withstand things like exposure to UV and...
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    Re: Unidentified Problem - Need Help!

    Indeed @nolindan, I agree with your analysis. I don't think a reflector image would turn up like this; for starters, the reflector would have to be a mirror like you'd typically find in a telescope....
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    Re: Unidentified Problem - Need Help!

    Well spotted, Joshua.

    My bet is on a pinhole in the bellows or somewhere else close to the front stand/lens board, on the right-hand side of the camera if you stand behind it. It effectively...
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    Re: Red Bulb for Nuarc Safelight?

    I didn't all that much for the stuff I got. I suppose a few Euros per sheet, certainly not more, or I would have limited my intake.

    Can't tell about the performance of old rubylith; I still have...
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    Re: Red Bulb for Nuarc Safelight?

    I was fortunate enough to find a pack of rubylith sheets (roughly imperial size, give or take) in my local arts supplies store. No clue why they stocked it. I bought enough sheets to last me years...
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    Re: Red Bulb for Nuarc Safelight?

    This is how I understand it as well, and apart from panchromatic materials of yesteryear (Panalure for instance), AFAIK all current B&W papers tolerate a red safelight.

    However!
    The LED...
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    Re: Red Bulb for Nuarc Safelight?

    Except for the data you'd actually need for this application. Such as an emission spectrum plot.
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    Re: Red Bulb for Nuarc Safelight?

    Honestly I'd go online and order an arrangement of fitting RED led bulbs and use the ones that test well with your setup. Why bother with white ones if you're going to filter out anything but red,...
  20. Re: 135mm Schneider Componon Enlarger Lens Mount Size?

    Not surprising; you don't even need to thread those holes. Material like PETg etc. will be soft enough to just screw the tiny bolts into.
    The lens will likely be the same.

    Now, printing a decent...
  21. Re: Photography is a Top Driver in Silver Demand, Showing Film’s Resurgence

    From the article:

    Interesting; that's the closest to a firm number I suppose we can get on how the film industry has been developing. Note that it includes x-ray which apparently for some reason...
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    Re: What's With the Rodinal? Can't Find Any

    https://www.freestylephoto.biz/12054-Adox-Rodinal-Film-Developer-500-ml
    Lookie here:

    See the issue now?

    @HT Finley, have you included (more or less) equivalent developers in your search? Think...
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    Re: Epson 4990 vs Nikon D850?

    Given the discontinuous nature of both dye transmission spectra and CCD/CMOS element sensitivities, how did you arrive at the high CRI requirement?
  24. Re: field processing and contact printing wet negs?

    A negative doesn't require all that much washing. I'm not sure why you want a short wash, and how short you're actually thinking of, but a few minutes and a few changes of water is all it takes to...
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    Re: Photronix Delta III densitometer

    No!

    If the photo on this expired eBay ad is still current: https://www.ebay.com/itm/255540449394
    You need a 12VDC wall wart with center-positive jack. Those are very common. The adapter on the...
  26. Re: My LED enlarger lightsource instructions / Complete parts list and build

    Just a remark on using WS2812 etc. for color / RA4 printing. Long story short: it's not a viable option.

    There are three problems with this, two are deal-breakers in their severity, one is merely...
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    Re: Palldium or Platinum ?

    You could build a LED UV exposure unit for a fraction of the cost and simply use a decent old-fashioned contact frame. Will work a treat for continuous tone negatives. Expect to drop a couple of...
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    Re: Printing techniques from wet plates?

    Yup, that sums it up. I used to bleach in a copper sulfate/potassium bromide bleach and then either sepia tone (thiourea) or redevelop in acidified silver nitrate solution. The former gave better...
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    Re: post alternative techniques

    https://tinker.koraks.nl/wp-content/uploads/2022/08/MG_5283.jpg
    Carbon transfer from 8x10 Fomapan 100 negative. Some minor issues, but overall I'm pleased with my progress since I revived my carbon...
  30. Re: Assessing film speed and development time without a darkroom.

    My memory isn't 100% reliable, but as far as I can recall, the account I read about the Moonrise shot was that he didn't have time for exposing a backup plate because after the first shot, the light...
  31. Re: Assessing film speed and development time without a darkroom.

    While in principle this could be done without a darkroom, it sure is rather inconvenient to contact print negatives without a darkroom.

    Yes, I've seen people make wet prints without a darkroom.
    ...
  32. Re: Assessing film speed and development time without a darkroom.

    Using a known-density reference (e.g. a stouffer wedge) you can use your scanner as a densitometer. Scan the reference along with the film in one go and 'measure' densities in Photoshop etc.
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    Re: post alternative techniques

    Time will tell...I don't know yet. But I can see valid reasons for concern, indeed.

    @Vaughn: I actually think a thin subbing and a thin carbon image would be a better idea than heavy sizing and...
  34. Re: Printing color slides on Harmon Direct Positive paper

    No, but it does sound like a decent possibility. Two caveats come to mind:
    1: The contrast range of a typical slide may not match the paper perfectly - but thinking about it, it might match better...
  35. Re: Subbing silicon coated mylar for carbon tissue

    I've got x-ray here, probably even some blue stuff I wouldn't use for anything else, but I've only got 8x10 and that's too small for printing 8x10 negatives. Moreover I'd prefer something a little...
  36. Re: Subbing silicon coated mylar for carbon tissue

    Drew, thanks, I was afraid of that.

    Domaz - because I've got it, that's why. I know about yupo and quite frankly I never understood the big deal with a relatively expensive material in this...
  37. Subbing silicon coated mylar for carbon tissue

    This is a shameless cross post from the same question on Photrio: https://www.photrio.com/forum/threads/subbing-siliconized-bo-pet-mylar-estar-film-for-gelatin-adhesion.193350/unread
    My apologies...
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    Re: Advice On Uneven Development On Film Edges

    While this is in general of course always good advice, there's as far as I know no reason why ventilation requirements would be any more strict for pyro developers than for other darkroom chemistry....
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    Re: Kodak chemicals -- now what??

    No, pyro stain is not cleared by c41 fixer.
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    Re: Advice On Uneven Development On Film Edges

    The 35mm film I did in 510 as far as I remember also didn't show any trouble, but I just put that down to 35mm simply not being very prone to it due to the physical properties of the film and reels,...
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