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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...
  10. 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...
  12. Re: Durst L1840 Enlarger 8x10 10x10--Everything you wanted to know...

    Assuming everything has been properly aligned and leveled, which is fairly easy with that Durst model, you place a negative in the carrier and very precisely focus on either your baseboard or easel...
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    Re: Single Travel

    I had a bear that fat sniffing around my truck and pack one night last yr at an "official" campground returning from a hiking trip. The only way they get that big is by eating junk food and garbage....
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    Re: Two Weeks, Two Workshops, Too Much Fun

    I wasn't trying to be disrespectful, Jim - was just talking in big carnivore dialect for fun.
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    Re: Two Weeks, Two Workshops, Too Much Fun

    Dern ... them bears n big furry wildlife sure has em a habit of breakin into Park cabins n hepin themselfs to everythung. But congraterlashuns on havin fun!
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    Re: Single Travel

    Well, there's Yosemite Valley, and there's the larger Yosemite Park. All the pictures I've taken in the Valley itself could be counted on one hand, even though I've been through there many many times...
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    Re: Single Travel

    Both of us knows what goes on around North Fork, John. There once were over twenty of acres of opium poppies just a few hundred yards behind the public landfill disposal operation, hidden by trees,...
  18. Re: "The big two" - Please tell me about your japanese lenses!

    Raccoons ate the snails (escargot) in my yard, so maybe they prefer French lenses too.
  19. Re: any proxy for Cibachrome P-30 chemicals

    Ciba base itself is a very high quality polyester sheeting useful for various darkroom applications, like cutout masks, templates, and shims. I wouldn't throw it away, even if it goes bad for its...
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    Re: Single Travel

    Both Sequoia NP and Yosemite NP have had major Cartel pot operations discovered inside park boundaries requiring serious swat team efforts to neutralize. It even happened in a particularly poison-oak...
  21. Re: Crazy Horse on the subject of portrait photography

    The idea of "stealing one's spirit" by taking their picture has been revived by some neo wannabee Indians. I know one of them. How much this concept applied to historic Indians is questionable; but...
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    Re: Single Travel

    We have over a hundred sizable parks in a short distance - NP holdings (Pt Reyes, GGNRA), several large State Parks, many many Regional Parks and Open Spaces, some quite large too. I can only think...
  23. Re: any proxy for Cibachrome P-30 chemicals

    You could probably home-brew the developer. The fixer is ordinary. But making your own bleach is unrealistic. The greater question would be, is the paper itself still any good and worth the effort? ...
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    Re: Single Travel

    I saw a guy trip over a log and fall smack on his face due to staring at a GPS. He was looking for a particular lake, which was in fact visibly right in front of him. He darn near fell right into it....
  25. Re: How different are Tessars from different companies?

    Tessars, generically, might very well have been made of molded plastic or hybrid components for modern small amateur camera applications. I'm not going to bother to research that either way, because...
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    Re: Sheet Opal Glass sources ?

    What Edmund lists on their amateur website is about 1% of their full industrial selection; and larger as well as custom sizes of opal glass are probably available. Yes, they're more a convenience...
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    Re: Single Travel

    I sure don't see any need for guns in Natl Parks (they're still illegal if loaded), or even in most Wilderness areas. Active grizzly or polar bear habitat might be the exception; but an ordinary...
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    Re: Ventilation specs for darkroom

    Pulling air is always more efficient than pushing it. An in-line fan somewhere in between, with ducts both directions, is a compromise. But there are also logistical issues. It's fairly easy to...
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    Re: Single Travel

    A water filter if you're out for awhile and don't know the purity of local streams and lakes. In many remote areas the water can be purer than city or bottled water; in other places downstream from...
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    Re: Ventilation specs for darkroom

    Thank you. I have a pair of tinsnips you can borrow if needed.
  31. Re: Durst HOMASKSET; Laraneg Masking System...FOUND!!

    I make my supplemental sizing masks out of old voided Cibachrome stock, which is a nice thick 20-mil polyester.
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    Re: Ventilation specs for darkroom

    You don't know what you're talking about, Tin Man, or I am confusing you with a character in Wizard of Oz? If you take 240CFM, factor in hydrostatic pressure outside on a rainy day, or even in a...
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    Re: Single Travel

    Numerous tragedies or dicey rescues could be avoided if day hikers simply wore a belt pack containing a waterproof poncho or parka and a warm dry sweater, even on seemingly mild days. In dry areas,...
  34. Re: Durst HOMASKSET; Laraneg Masking System...FOUND!!

    This kind of thing is easy to make, and is really redundant anyway if you have a centered negative and use the built-in adjustable masking blades below the carrier. But it would make such centering...
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    Re: Ventilation specs for darkroom

    A computer fan????? That's like a mouse dueling a mountain lion. Wrong Holiday. This is Halloween, not April Fools Day.
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    Re: Ventilation specs for darkroom

    Every darkroom realistically needs adequate ventilation and fume extraction, no matter how innocuous you think your chemistry is. You might get away with being oblivious to the issue year after year,...
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    Re: Ventilation specs for darkroom

    Positioning of your exhaust duct is important. You want air pulled away from you over the sink and through the wall behind the sink. Then you need a light proof air intake vent behind you of...
  38. Re: How different are Tessars from different companies?

    Well, at the time he was quite fond of the 200M, which has limited coverage on 5X7. The 300M would be excellent for that format, and I recall he liked to travel with that lens too. I've only chatted...
  39. Re: How different are Tessars from different companies?

    Enlarged just a bit. But it's a different topic than vintage tessars anyway, which I suspect are coveted more for a certain image look rather than portability or sheer sharpness. The relatively late...
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    Re: Citric and acetic acid as stop (bath)

    I use glacial acetic acid at around 1/2 %, mixing just enough per daily session. I never re-use anything. It's nasty and appropriate precautions should be followed, including a fume hood. With safer...
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