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  1. Replies
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    Re: Rebuilding a Deardorff 11x14 Studio Stand

    Can't help you with the rubber ring question, but I have a word of warning.

    Barry Cochran restored the stand that I have, and delivered it (Tennessee to California!) in a rented pickup truck. A...
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    Re: The Setup and the Shot

    I've been away from the forum (and LF photography) for a couple of years, and I must say that this thread was a delight to discover today.

    A lot of folks talk about sharing, but it usually stops...
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    Re: Update on my 'dorff issue

    John already has been waxing mightily about this venture. Probably doesn't need to wax, probably doesn't know it, either!

    Hmmm. Nothing new for three days. Interest has apparently waned...
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    Re: Source of hot water

    I can all too clearly recall the first time I tried to set up my brand new Calumet fully plumbed darkroom sink---and discovered that the mixing valve was not designed to work at less than about 5...
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    Re: Darkroom Temperature

    depending upon the relative humidity, agitation/air movements, trays and sink composition (heat transfer characteristics) - your actual solutions temps

    John Layton listed most of the commonly...
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    Re: Fixer Concentrate Go Bad?

    The sulfur precipitation is caused by oxidation of thiosulfate and/or acidity from dissolved carbon dioxide (sulfite is normally present as a preservative). Cheap polyethylene bottles are somewhat...
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    Re: Water filters

    It really depends on the water quality and plumbing. I have well water with a huge amount of dissolved iron, plus various salts (including nitrate). Plastic pipe apparently allows enough oxygen in to...
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    Re: Film holder question from a beginner

    The Epson V700 comes with film holders, but also a template for positioning things directly on the glass platen. When setting up a scan, there is a choice between "film holder" and "film area guide"...
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    Re: where I can this deardorff screw?

    itís not a 4-40 or 2-56 but in-between

    Then most likely a 3-48 (coarse) or 3-56 (fine). Not a common size anymore, but still available.
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    Re: Do I really need a second lens for 8x10

    Leigh is right, of course. And it is also possible to use an extension lensboard or a telephoto design.

    But a glance at the Chamonix website showed that the 8x10 has a maximum bellows extension...
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    Re: Do I really need a second lens for 8x10

    On the assumption that 800mm is meant seriously, you need to play around with the focal length/magnification/image distance equations to see what will work on your camera. You might be surprised to...
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    Re: Potassium Dichromate on Mahogany Cameras

    Potassium dichromate is a strong oxidizer, and all of the "drying oils" used in traditional varnishes are strong reducing agents (cellulose is no slouch, either) so it is very unlikely that you are...
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    Re: Computerized Matte Board Cutters

    Since the OP used the phrase "for personal work" I will offer the following:

    My local framing shop has a computerized mat cutter, and it is a joy to watch. However, I prefer "floating" mounts...
  14. Re: Fixing the light trap in a 100 year old 12x20 Korona plate holder

    Since silver is well above every metal except gold in the electrochemical series, it will displace the others and they will be lost to corrosion products (nitrate, oxide, etc.)
    The metal you found...
  15. Re: Exposing a gray scale for Zone System calibration

    The Zone System today is a wasteful distraction

    Possibly, once you fully understand it and have practiced it enough to be sure of that. As a step up from taking a light meter reading and exposing...
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    Re: Weston Thermometer

    About three years ago, I bought a new Weston thermometer to replace the little 1" dial thermometer that I had always used. It was a while (months) before I put it to use, and discovered that while it...
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    Re: How to mount Gem lenses?

    Yes, anyone who is "comfortable" working with a fly cutter should probably find an inherently safer way to do the job. That is one reason why I favor mounting the workpiece to a piece of scrap which...
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    Re: How to mount Gem lenses?

    Sometimes fly cutting can produce a tapered hole if the area around or above the cutting tool can make contact with the cut area as it goes deeper through the material, so make a test cut first on a...
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    Re: Screw Source for C-403

    Yes, patience is often useful. With enough of it, good hand-eye coordination and either a round Swiss-pattern file or a Dremel tool, you could have opened up the hole to the head diameter of whatever...
  20. Re: Alternate History of Photography: how early could it have been invented?

    I know that I have seen pinhole images made on photographic paper using a simple box camera mounted to a building or pole, and exposing for months.

    Silver nitrate has been known since the 13th...
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    Re: How to mount Gem lenses?

    If you have a drill press and small enough fly cutter (I'm not familiar with these lenses, but you should be able to get down to something a bit over an inch in diameter) you can make snug fitting...
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    Re: Screw Source for C-403

    Steven,

    I'm glad that it worked out.

    If I had thought you might ream out the hole, I would have suggested not a step drill, but a #15 twist drill (0.180 nominal diameter) followed by a #13...
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    Re: Screw Source for C-403

    Steven,

    The screw that you illustrated is slotted; socket-head cap screws were suggested because it is the side of the screw that forms the bearing surface in the camera situation, and the cap...
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    Re: Screw Source for C-403

    tonyowen:

    Your question might appear to be afield from the original question but it is not, really; there is a matter of scale involved.

    The screw in question is a 4-40, with a minor diameter...
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    Re: Screw Source for C-403

    I just went out to the garage and tried filing a couple of black-oxide finish socket head cap screws (a 2-56 and a 6-32) and a smooth mill file cut them just beautifully. However, YMMV.

    With due...
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    Re: Screw Source for C-403

    Yup. Its right there in the first line. Seeing the picture I had understood that he was looking for a replacement for a replaced, but non-functional, screw. Darn.

    But the head of a 4-40 fillister...
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    Re: Screw Source for C-403

    Jim Jones probably has the best answer. I just took a look at one of my CC-400 cameras, and it looks just like yours---except that the head of the screw is close to flush with the face of the lever....
  28. Re: Leaking Leedal darkroom graduated Measuring container

    Epoxy 2 part mix, outside surface of the graduate

    Close, but not quite---fill the hole from the inside, and make sure that there are no crevices either inside or outside; since the pit may be...
  29. Re: Leaking Leedal darkroom graduated Measuring container

    Many stainless steels are susceptible to pitting corrosion (type 316 is specifically formulated to be resistant) which can be caused by any bit of more active metal (usually, iron) contacting it in a...
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    Re: Flattening Curly Film

    A few years ago I came into possession of some old negatives which had been stored in film cans since the 1950s; it was hard to unroll them far enough to see what they were, let alone scan or print...
  31. Re: expanding back from camera ( small ) to mate with back ( bigger )

    John,

    I wish I had seen this thread when it was current. If I understand your problem, you want something to fill the space between the components and sort of "key" them together--reversibly. The...
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    Re: Veritar instructions?

    I have pointed this out a few times in the forums (and had it confirmed by others once or twice) so I will mention it again:

    The softness is not only related to distance from the focal plane, but...
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    Re: Safe Haven for Small Formats

    Peter,

    I think that there is something to what you describe, but it seems that there is also an element of "working speed" versus format, in that the larger formats more or less force you to...
  34. Re: Feasibility of tele-xenar lens on calumet monorail

    You mentioned the lens board size, but I hope that you are aware of the light-baffle grooving on the Calumet. I'm not familiar with the MPP board, so I don't know if they are actually...
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    Re: Designing/Thinking about a darkroom

    The last couple of posts make a good point; some realistic thinking may be in order here.

    Unless you are independently wealthy, you probably won't be climbing far on the learning curve while...
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    Re: Still Life Lighting

    Christopher,

    I am sure that you missed the point I was trying to make. That is a lovely image that you posted; can you try it again with the pepper rotated a bit counterclockwise so that the...
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    Re: Wet Plate Collodion - Alcohol

    Fr. Mark is right about the ethanol/water azeotrope, but industrially anhydrous ethanol is (or used to be) made by co-distillation with benzene. The details of physical chemistry are not important,...
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    Re: Still Life Lighting

    Christopher,

    I agree that diffusion of window light makes it easier to work with, but the larger problem is that it changes throughout the day, with the seasons, and with the weather; being able...
  39. Re: Black and White Film and Artificial Lights

    Ian,

    For educational purposes, you might play with your digital camera: white-balance for daylight, and make your picture with incandescents. I expect that you will get images that look extremely...
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    Re: Still Life Lighting

    Why not just use window light?

    Not to speak for the original poster, but to possibly help any beginner in this genre:

    Window light is wonderful, properly handled, but it has the huge...
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