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  1. Re: Chemistry Query: grain enalrgement from potassium ferricyanide or bromide?

    Thanks for the info and taking the trouble to test so extensively. It seems, however, that we still can't really blame the SLIMT for affecting the grain size somewhat. If I understand your post...
  2. Re: Checking dev time for Tmax 400 / TMY2 in PMK

    Tim,

    I don't know if it helps, but my N time for TMY in PMK for 4x5 film developed by hand in trays, shuffling through the stack once every 30 seconds is 15 minutes. For constant rotary...
  3. Re: Methods For Hardening Film Emulsion?

    I concur with the majority opinion here: you should try to refine your handling technique before looking at chemical hardening of the emulsion.

    Yes, we've all scratched a negative or two along the...
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    Re: 4x5 Exposed Film Archiving

    I use the 4-sheet Printfile pages as well, plus the dedicated dust-proof binders, either from Printfile or Besfile. I like white, but they come in black as well. These binders are basically boxes,...
  5. Re: Chemistry Query: grain enalrgement from potassium ferricyanide or bromide?

    Thinking a bit more about this: Both D-23 and D-76 have 100g of sulfite in the stock (full-strength) solution. Kodak says this about diluting 1+1: "For greater sharpness, but with a slight increase...
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    Re: F stop markings on lens board

    Tripod height should be determined by the subject, i.e., it's part of finding the right camera position for the shot. So, sometimes I have to squat, lie on the ground or climb up on whatever is...
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    Re: F stop markings on lens board

    +1 I guess I'll just keep setting the aperture with the end of my cable release for my lenses mounted in recessed boards :)

    Alan,

    In response to your original question: I find that having a...
  8. Re: My Omega Condensers have scratches - any negatives (hah) with using a diffuser?

    I guess I stand corrected about using something opaque to black out the scratches. Since the scratch can come into focus, so can the black mark.

    Here's hoping your new condenser set does the job....
  9. Re: My Omega Condensers have scratches - any negatives (hah) with using a diffuser?

    There's your answer; Bob beat me to it. It is standard practice with lens defects just to black them out. The same should apply to condenser lenses. However, I could be wrong... you may see the...
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    Re: Problem with Pyrocat HD from PF

    Peter,

    Don't be too hard on yourself. It's easy and comfortable to expect that your developer will work the same way every time. It's what we've come to expect from packaged developers from...
  11. Re: Chemistry Query: grain enalrgement from potassium ferricyanide or bromide?

    Ulophot,

    I imagine that what you are seeing is the silver-solvent effect from the D-23 developer used 1:1. At that dilution, the amount of sodium sulfite (about 100g/l if I recall) acts as a...
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    Re: Copal 0 shutter accuracy

    Drew makes a point that I neglected: The fastest speeds on clockwork shutters are never close, but it makes very little difference in practice since the fastest speeds are rarely, if ever, used. I...
  13. Re: What is the purpose of this baffle?

    Stereo would be side-by-side views, not top-to-bottom I would think. I imagine your baffle has another purpose... baffles me, though.
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    Re: ISO Question

    Yep, you overexposed two stops and your Zone III placement is now Zone V. Don't worry, most modern black-and-white (and even color negative) films will hold highlight detail with even more than...
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    Re: Copal 0 shutter accuracy

    Alan,

    Test your shutter speeds again, firing the shutter multiple times on each setting. If they are consistent (i.e., really close to the same every time), your shutter is just fine...
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    Re: Lens Filters for 4x5

    Alan,

    I really think you should just get the step-up adapter and use the filters you already have until you acquire another lens or two.

    After your 150mm, you'll likely want both longer and...
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    Re: Focusing loupe

    Yes. I have two similar to the one you linked to as well as my favorite, as seen on "Sherlock."...
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    Re: Focusing loupe

    Alan,

    Loupe power is a personal preference; some like more powerful, some less.

    The issue of seeing into the corners of the images arises when using very short focal lengths or lots of...
  19. Re: Lens Advice / Opinion: Consistent Look (or thatís not real)

    I was at an exhibition the other day and it was so disconcerting to see images taken with lenses from different manufacturers and with different designs displayed side-by-side. My Gawd, the glaring...
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    Re: Cable Release 4x5

    Alan,

    I think you're obsessing a bit much about accessories (on this and your loupe thread) :) You just need something to get the job done.

    I have cable releases with cloth, metal and plastic...
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    Re: 90mm 4x5 lens advice needed

    First, any 90mm lens will have the fall-off issue; it's simply the laws of physics. IOW, there's not a 90mm lens out there that doesn't "need" a center filter; it's just that some manufacturers...
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    Re: Darkroom setup: your thoughts

    If I were you I'd sheet rock the entire space and paint it low gloss or satin white. Bouncing a safelight off a white ceiling is really, really nice, plus, the whole space will be friendlier when...
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    Re: Ansco 130 - 1:1 or 1:2?

    Dancing in the Darkroom again Bernice? :) Can't think of a better way to time print developing! Joyeux Noel!

    Doremus
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    Re: long exposure light leak?

    Louis makes a good point: be sure to check for leaks with a filmholder in the camera. Check at all orientations of the back too.

    Doremus
  25. Re: how to avoid the lens shade / compendium in the image

    Klaus,

    The obvious answer is to check for vignetting at the taking aperture; i.e., stop down first and then check. Checking the ground glass at the smaller aperture should show you if the lens...
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    Re: long exposure light leak?

    That's where I'd look. From the look of the negative, the light-strike is definitely happening in-camera.

    BTW, taping flaps on filmholders does nothing but hold the flap... The flaps have baffles,...
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    Re: long exposure light leak?

    Uhhh, film notches can go on either side of the film holder... just depends on how you like to load your film. Many people load filmholders with the notches up. My notches are always at the bottom...
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    Re: Info request on Zone VI camera

    I own a late model non-ultralight Zone VI camera w/ bail back. It's pretty heavy compared to my Wista DX, but has a gratifying amount of bellows draw for use with longer lenses. I did have a bit of...
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    Re: Nikkor M300 f9.0 not sharp

    Patrick,

    Do you mean that the threaded ring that the filters screw into is bent? If so, this may be an indication that the lens has been dropped. If that is the case, it may well be unsharp due...
  30. Re: How to do tray processing - both regular and stand?

    You'll get as many methods for tray developing as there are people doing it. Here's mine: [Edit: I just posted this and saw how long it was... Don't despair, it's really much harder to describe...
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    Re: How to obtain a Dynatect bellows.

    Thanks Neal.
  32. Re: Can anyone here help me understand how to use the Sekonic L-778 Dual Spot Meter?

    Using the Zone System with color materials is very similar to using it with black-and-white, it's just that you don't have as many development controls and contrast controls at the printing stage are...
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    Re: Chamonix 45-N2

    I wanted to ask this too. Maybe we should see a negative?
  34. Re: Can anyone here help me understand how to use the Sekonic L-778 Dual Spot Meter?

    Averaging readings to get to your final exposure setting is not always the best approach. It will fail on the side of underexposure for any scene contrastier than "normal." Learn to take a shadow...
  35. Re: Questions about 4x5 film developed by local lab

    You've got lots of good advice so far. Let me add my thoughts:

    Almost all the defects you question are directly attributable to a light leak problem.

    First, it would really help to see a scan...
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    Re: Camera lens compatibility

    The lensboard pictured is a Technika-style lensboard that fits many brands of cameras including Linhof Techika, Wista, Chamonix, Shen Hao, etc. So, as far as I can tell, the lensboard should fit the...
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    Re: Chamonix 45-N2

    If your present bellows has a pleated portion toward the rear and a non-pleated (bag-style) portion at the front, then you have the universal bellows. I don't have a Chamonix, but I work with a...
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    Re: What Happened to Dry Mounting Prints?

    Follow-up from me.

    First, I'm speaking of black-and-white fiber-base silver gelatin prints only here. I don't do color anymore and would likely go d*****l if i did.

    I use the BufferMount just...
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    Re: Cold Temp Paper Washing

    Thinking inside the box :) A larger water heater might be just the solution you're looking for...

    Doremus
  40. Re: Darkroom plumbing advice needed, please

    Maybe my set-up and my thinking behind it will help with your planning.

    My darkroom has a 10-foot sink. My water supply I had plumbed to enter just above the sink backsplash about 1/3 of the way...
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