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    Re: Cleaning A Lens of Fog

    Do you mean fog between the elements from moisture condensation, like temperature shock, or having the lens too long around dampness? If that is the case, you need a little dessication chamber. Get...
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    Re: DOF on 8x10 vs. 4x5?

    The first two things I learned to ignore, and never have regretted ignoring, are "circle of confusion" and "normal viewing distance". The latter might be relevant to a book printer, where there is a...
  3. Re: Large Format Product & Food Photography Tips/Advice?

    I have a friend will a two-story shooting setup. There is a half-story well above the kitchen with a telescoping extendable catwalk which accepts his big Foba stands and Sinar cameras, then his Bron...
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    Re: LED Light Table?

    Sigh ... I don't have time today to discuss all the "what if" factors. So I'll simply default to the position that a well-made lightbox will be reliable far longer than most scanners, be less...
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    Re: DOF on 8x10 vs. 4x5?

    There's the science of this, which might be fun to study and pontificate about in an armchair style, and devise all kinds of fancy charts, formulas, and programs about, and then there's the actual...
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    Re: LED Light Table?

    No Pere, that cheap toy you post would be inappropriate for copying applications for reasons I already mentioned. Not only will the color temp be way off from the advertised rating, but the...
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    Re: DOF on 8x10 vs. 4x5?

    The most easy kind of adhesive holder to make involves removing the film slide-in fins from a regular plastic Lisco or Fidelity holder, using a utility knife and straightedge, then carefully applying...
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    Re: DOF on 8x10 vs. 4x5?

    Film flatness is a non-issue if you use an adhesive or vacuum holder for 8x10 film. The film plane will be even more precise than using a conventional 4x5 sheet film holder. I really like the...
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    Re: DOF on 8x10 vs. 4x5?

    Relative to comparable ANGLE OF VIEW, lets say you do use a 240 lens at f/22 on 4x5. But to get the same angle of view on 8x10, you'd need a 480mm lens - twice the focal length. So to obtain the...
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    Re: Seal 200 Commercial press

    Wholesale picture frame suppliers routinely carry Seal press parts. Otherwise, for a sub-component, locate a real old-fashioned solder-gun electronics store.
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    Re: LED Light Table?

    You could look at either traditional fluorescent tube Kaiser boxes (not cheap) or Just Normlicht, which B&H still also offers, I believe. They have relatively compact versions ideal for your needs....
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    Re: LED Light Table?

    Why do you specifically want LED? Right off the bat I detect a potential discrepancy in the ad. If the LED's are allegedly 5000K, it means the light box is not, because you still have a color bias...
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    Re: Seal 200 Commercial press

    Dave - you probably need a new thermostat. Expect to pay around $100. Plus rewiring. Use high temp "engine" or "truck" wire. I don't know about that inexpensive temp monitoring device you linked -...
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    Re: What is anti-Newton ring glass exactly

    Well, good luck with that, and when you get results, post them.
  15. Re: Very neat artice by the New Yorker on Thomas Joshua Cooper

    Writes like just another windbag trying to impress other wannabee artistes who overcompensate for what they never really possessed to begin with.
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    Re: What is anti-Newton ring glass exactly

    Why not do it on real RA4 paper instead using an actual color negative control? That would be a lot more efficient and realistic.
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    Re: Keeping Time tray developing film

    Indeed. Be careful where you aim or place anything even slightly illuminated. Light can always harm if film in the tray is in a position to "see" it. I just don't buy, "it's never happened to me"...
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    Re: What is anti-Newton ring glass exactly

    Thank you, Pere. I was already aware of all that, and of the various ways these old condenser heads have been modified, even into halogen color enlargers. But there are obviously good reasons why...
  19. Re: Large Format Product & Food Photography Tips/Advice?

    That lens sound fine because it will give you a little distance. The Symmar S is an older series with a good track record. It's not as contrasty as most newer multi-purpose plasmats. But it will be...
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    Re: Keeping Time tray developing film

    A phone is another thing I go to the darkroom to avoid.
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    Re: What is anti-Newton ring glass exactly

    You seem to be talking about some awfully old 138's, Pere. All of mine have used mirror boxes and diffusion. I do have an old condenser head stored away somewhere - never used it, and sold off all...
  22. Re: Large Format Product & Food Photography Tips/Advice?

    I've seen some very elaborate expensive setups in studios dedicated to food. But to shoot single plates straight down all you need is a large copy stand capable of holding a 4x5 with a right angle...
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    Re: Keeping Time tray developing film

    I thought the darkroom was the place to escape the Muzak.
  24. Re: Gitzo 1371 3-way head has two locking knobs?

    The lesser knob is for adjusting "drag" - or friction like reddesert describes. In some tripod heads, instead of a secondary knob there's just a set screw adjustment.
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    Re: Keeping Time tray developing film

    I'm not sure what a "nice voice" sounds like to Aussies. I'd rather have neutral bleeps. I reckon the only thing those obnoxious new Alexa devices should be programmed to understand is, "shut up".
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    Re: What is anti-Newton ring glass exactly

    Well, unless the mask is made from something rigid like black anodized aluminum, it might have a tendency to warp under heat and need to be firmly clipped or taped too, and not just registered in...
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    Re: What is anti-Newton ring glass exactly

    Yes, Pere, but unless you have registration pins and attached registration loops involved (doable), it means taping the mask on, then needing to remove tape residue afterwards. In such cases,...
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    Re: Keeping Time tray developing film

    I have several options. The most common method is the Zone VI compensating development timer, which can be set for real time too, and beeps every 30 sec in addition to red LED readout per second. For...
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    Re: What is anti-Newton ring glass exactly

    That's a good start, Pere, but as you already stated, it's the projected image which counts. And in that case the variable of angle of incidence of light to the specific surface pattern of the AN...
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    Re: What is anti-Newton ring glass exactly

    Pere, once again you're guessing about this. I've been actually doing it for decades with exceptionally good results. The trick is to have the correct kind of AN glass for the angle of incidence of...
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    Re: What is anti-Newton ring glass exactly

    Done correctly, there is no diffusion whatsoever to the image when using AN glass both top and bottom. Every bit as sharp. It's how I've done it the past 40 yrs on all my enlargers. No contrast...
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    Re: John Muir Historic Site

    The abode building behind the orchards is now for Park personnel use and not open to the public, though it can obviously be photographed from outside. There was a big squiggly crack in the...
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    Re: Durst L1840 Parts Needed

    Oh my. That's unfortunate. There were a number of flavors of these Durst enlargers, and I haven't personally seen all of them. But as long as the focus rack motor is functional, it should do the...
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    Re: Durst L1840 Parts Needed

    Yes, there would be a built-in auto stop. But what you need to take a picture of and post is the whole device area retaining the bottom of the bellows and lensboard. It's there, attached to a...
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    Re: Durst L1840 Parts Needed

    You should have a manual knob for bellows focus directly opposite to where the motor gear engages, not at the same position. Look around.
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    Re: Durst L1840 Parts Needed

    If it was officially equipped to be exported to the US, it is very likely the focus and head-elevation motors are 115V, and can, if necessary, be operated completely independently of a 240V power...
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    Re: Durst L1840 Parts Needed

    Motorized focus is easy - you just momentarily toggle the switch one way or the other; it can handle very minor adjustments. But you can still do it manually; it just takes a little more hand...
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    Re: John Muir Historic Site

    Thanks Thomas. I chatted with the friendly young ranger at the desk and he didn't think so. I should have asked the lady at the mansion itself when she was sweeping the front porch. My smaller Ries...
  39. Re: Box of paper dated 1952, what to do with it?

    Save it unopened as a conversation piece, like amidol-stained fingernails.
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    John Muir Historic Site

    This is one of those smaller Natl Parks - friendly, uncrowded, and well maintained. I was just out there and the orchards are in fall color. It is best noted for its splendid Victorian mansion where...
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