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  1. Re: Beseler 45MCRX motor struggles when raising

    I heard the 'X' in the part number was for the 'X' shape supports on the main chassis.
  2. Re: Beseler 45MCRX motor struggles when raising

    I have an old 45MX (maybe other letters) that I bought used in about 1980. It seemed old then, but the motor is still strong. Makes me think that your carriage could be off or you missed a lube...
  3. Thread: Spotting

    by Eric Woodbury
    Replies
    16
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    497

    Re: Spotting

    You can go backwards by using dilute ammonia on a cotton swab to remove SpotTone.

    I use a loupe from Edmunds that has a cut-away on the side that allows the brush to be under the loupe and in...
  4. Re: Advice needed for stuck lens retaining ring, please

    The front element was stuck on my Fuji 360mm and the shutter needed work. My camera repair guy wrapped the front group rim in double-sided tape for a good hand grip. Came off easily.

    Hot/Cold...
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    Re: Going Wide on 5x7

    The El Nikkor 90mm f/8 is a comfortable lens on 5x7. Prices were very low on this lens a while back, but not sure now. 72mm SA XL is a fun lens for 5x7, but not sure about portraits unless they are...
  6. Re: Darkroom Design for a 9.8ft x 10.1ft room

    My first darkroom in this house was a bedroom. 9' x 9' with a low ceiling, 6' on one side and about 6'7" on the other. (I had a hole in the drywall on ceiling where the enlarger could rise to full...
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    Re: Cordless telephone for darkroom

    None.
  8. Re: XTOL not mixing well and not working any more!

    LegacyPro EcoPro Ascorbic Acid film developer is the same (at least close enough) to XTOL. I've never had an issue with it. I mix in distilled water, store in 500cc bottles, 10 of them. Never had...
  9. Re: Source needed for KCN, potassium chloride

    Roger, sorry about the title. Apparently that is an edit I can't make.

    No, I don't want to "PLAY" with it, but I'd like it for wet plate collodion. It gives the color I prefer. What I have is...
  10. Re: Source needed for KCN, potassium chloride

    Artcraft does not carry it. The link points to KCl.

    Shipping is to another state where I need it. East coast. Probably if I drive out to the mines in Beatty NV, they'd give me a carload. 30...
  11. Re: Source needed for KCN, potassium chloride

    I'm in Santa Barbara.

    I've heard this chemical is used in gold mining, jewelry polish, and bug killing jars.

    -e-
  12. Source needed for KCN, potassium cyanide

    For fixing wet collodion plates, I prefer the color given by KCN. Does anybody have a source for this where it doesn't cost a fortune or require a dump truck to deliver?

    Yes, I know it is...
  13. Thread: Salthill

    by Eric Woodbury
    Replies
    27
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    9,454

    Re: Salthill

    I have a dual mirror alignment tool for setup of a copy stand. Very nicely built. Elegant. I've never seen another like it. Hasselblad.
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    Re: 8x10 film holder case

    I use a Trader Joe insulated shopping bag with zipper across the top. Wife found it at the thrift store.
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    Re: Mat Size vs. Mount Size

    You are right. 16x20 is a lot of bulk to store. You can use a small board, a 2-ply board, or no board for the 8x10. There are many styles of mounting and framing, as you are about to find out.
    ...
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    Re: Digital file to B&W negative

    Yes, silver printing. Contact or enlarged. I don't need bigger than 8x10.
  17. Replies
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    625

    Digital file to B&W negative

    I'd like to be able to use a digital camera to make a conventional negative. I know this is possible, but a few questions:

    Can a digital negative be enlarged? I expect not, at least not by much....
  18. Looking for a count up timer for use with film development

    This should be trivial to find, but not the case.

    When developing film in an open tray, I'd love to have an LED count UP dimmable timer. I can't seem to find one that isn't a project.

    I...
  19. Re: Southern California incinerator source for black-and-white negatives?

    As I understand it, BW didn't burn many and not the good stuff. It made for a good show.

    Negs will shred fine.
  20. Re: Fujinon C 450mm F/12 .5 (or another) to replace Fujinon T 400mm F/8 for Lightweig

    I've used both these lenses. I had a 400T early on. Bought it brand new for use with 4x5. It was heavy and optically my copy was a turd. I sold it within a couple of months. Now I use the 450C...
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    Re: Mat Cutter Storage

    Probably because it has a cheap particle board support. Add a couple of lengthwise stiffeners to it so it won't ever sag and store it anywhere you want.

    [A mechanical engineer should check...
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    1,326

    Re: Leaf Shutter High Speed

    The "half-max" levels are not well-known here as the photo sensor is probably acting as a switch and certainly not linear between OFF and ON. Perhaps the 'switch' is fast enough and this doesn't...
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    1,326

    Re: Leaf Shutter High Speed

    As Robert noted, phototransistors are not to be trusted for evaluation of amplitude. Depending on the circuit, transistor, etc., linearity is not the best. For absolute amplitude, a photodiode is...
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    Re: UV Lightsource

    Monty, I'm no expert, but many here are. The question I'd ask is how much sunlight do you have? Since you can measure your UV, exposure should be easy.

    e
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    Re: Cutting Aluminum Sheets

    I use a tablesaw with carbide blade to cut up to 3/16" (so far) aluminum plates. Make sure your safety gear is in place. If your plate is too flimsy, put it between masonite or equivalent for the...
  26. Re: Solar UV exposure meter - for printing processes

    A few of my customers over the years have used their MetroLux in this fashion. This is the reason a MetroLux can such long exposures. A special photo diode and filter is required as our standard...
  27. Re: Curiosity testing for diffraction limitation -- very general

    Be sure to read this and the article mentioned near the bottom by Dr Hansma.

    https://www.largeformatphotography.info/fstop.html

    It is said that optimum f/# for LF lenses, and maybe others...
  28. Re: An Un-Announcement of My Carbon Workshop, Yosemite, Oct 2020

    Dang it Vaughn, your photos beg me to go back to Humboldt. I lived there a couple years and my girlfriend (now wife) was a ranger there. We sure miss it. It's nice to see a wide horizontal when...
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    Re: Tape like a post it note

    Lithographer's tape is good. 3M Scotch 616. This number is red transparent. Comes in black, also. Kapton tape is good in that it doesn't leave residue. It is fairly sticky. No static...
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    Re: Bleitz Camera Co

    That's a Paillard Tripod. Some relation to Bolex. That's a different head than I've seen on the tripods I have. I see a 16mm a custom head for a 16mm Bolex. They have a level bowl on them. Nice...
  31. Re: Ilex No. 3 Universal shutter retaining ring size..

    I'm with you Robbie. I have a 180mm El Nikkor enlarging lens without the ring. I made one by cutting a soft plywood ring fastened to a lensboard that was about the proper inside diameter, then I...
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    Re: Magnesium Powder Flash

    Don't forget the erg.
  33. Re: Many paper developers back-ordered or special order with long delivery lead

    I haven't used their paper developer nor do I use warm papers much, so take this with a grain of salt. I do use their ascorbic acid film developer (similar to XTOL) and it is fine. For paper, I'm...
  34. Re: Seeking Ideas For Replacing Film Holder Labels?

    I just tested ethanol, isopropyl alcohol, goo gone, de solv it, orange cleaner, windex, and acetone. Acetone works to remove Sharpie from those white strips. Alcohol only removed a little with...
  35. Re: Seeking Ideas For Replacing Film Holder Labels?

    I just tested ethanol, isopropyl alcohol, goo gone, de solv it, orange cleaner, windex, and acetone. Acetone works to remove Sharpie from those white strips. Alcohol only removed a little with...
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    1,163

    Re: Hypo clear?

    Hypo clear, or sodium sulfite, is still used to decrease wash time post fix, especially with fiber based papers. See the directions with your paper of choice.
  37. Re: An imagined LED enlarger light source for 4x5 -- NEW INFO FOR TECHNICIANS

    Drew, it's the same question we ask of SF? Despite my postal address, I don't live in SB.
  38. Re: An imagined LED enlarger light source for 4x5 -- NEW INFO FOR TECHNICIANS

    Samy's in SB is gone. When I first came to Santa Barbara in 1975, there were more photo stores than one could count. Now there is none. On the other hand, I'd wager there have been more digital...
  39. Re: An imagined LED enlarger light source for 4x5 -- NEW INFO FOR TECHNICIANS

    For simple, use white LEDs and contrast filters. There are a few DIY approaches to LEDs at https://www.ledsupply.com/ You could also use a mix of green/blue LEDs and filters. This would be much...
  40. Re: An imagined LED enlarger light source for 4x5 -- NEW INFO FOR TECHNICIANS

    True enough with LED light bulbs, but it is not the LED dying, it's the power supply inside the bulb either dying or killing the LED. A good article about this in EDN.

    The other reason to keep...
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