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  1. Re: Schneider Hi End Back and Schneider Vacuum Backs

    It wasn't on the market for very long, and it was discontinued and vanished from the Schneider website long ago.

    If you look at the S-K website from that era in the Wayback Machine you can get a...
  2. Re: Are LF accessories compatible between brands? Looking for a reducing back

    There is no standard for back size. It's conceivable that a "clone" product might fit - for example, some of the Shen-Hao camera designs mimic certain Ebony models. But you'd have to check whether...
  3. Re: Wista 45 RF... or alternative for handheld RF work at open aperture?

    The other option would be a Polaroid conversion, which depending on the model used for the conversion can offer the advantage of a combined VF/RF, so you can avoid the problem of staying in precise...
  4. Re: Wista 45 RF

    Crown Graphics come in two flavors - side-RF version which can be adjusted for any one focal length at a time, within limits, and top-RF version that uses interchangeable cams. I don't know if...
  5. Re: Wista 45 RF

    There are two variables to control in a rangefinder mechanism - the infinity setting and the slope of the cam. You can adjust the infinity stops on the 45RF to accommodate the different...
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    Re: Glassless Negative Holders

    I take it you mean the NegaFlat, and what you're trying to design is a carrier that will hold the negative in tension without chewing it up?
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    Horseman 45FA/HD/HF and 75mm lens

    Here's a question for Horseman 4x5 field camera owners. I think I know the answer based on incidental comments that have appeared in various threads over the years, but I'd like to be sure: can a...
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    Re: Aspect ratio of 10x8 and 5x4?

    Danny, the definition of aspect ratio just is the proportion between height and width (or width and height, you can specify it either way so long as you're clear about which approach you're using and...
  9. Re: How to Develop Characteristic Curves in Large Format...Cheaply

    Phil Davis's BTZS book, or at least the third edition which I have, has an appendix with some guidance on using a spot meter as a makeshift densitometer.
  10. Re: How to Develop Characteristic Curves in Large Format...Cheaply

    The OP asked about curves. From my perspective, this is the special value of a densitometer. You don't need one to figure out how to expose adequately for the shadows or how to develop to keep the...
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    Re: Having trouble deleting old attachments

    I've done a bit more research on this. You can't directly delete pictures from "Manage Attachments". However, you may have noticed the fine print "Uploads not utilized within one hour will be...
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    Re: October - put up or shut up

    Not sure just what got into the water here... but whatever it was, did.
  13. Re: How to Develop Characteristic Curves in Large Format...Cheaply

    In "Beyond the Zone System" Phil Davis calibrated sheet film by contact printing a transmission step tablet with a single exposure. These can still be had from Stouffer for not-outrageous prices.
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    Re: 8x10 Polariod Portrait Prices ???

    I trust that the OP will share with his clients what is known about the stability of *processed prints* made with the Impossible/Polaroid Originals integral material.
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    Re: 8x10 Polariod Portrait Prices ???

    Interesting thought. A very contrasty, narrow-exposure-latitude material, but it's way cheaper per sheet than the Polaroid, and if you're going to work in your own studio space, with a bit of...
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    Re: 8x10 Polariod Portrait Prices ???

    FWIW, Florian Kaps is charging €77 (currently about $84) for an 8x10 Polaroid B&W at his studio in Vienna:
    ...
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    Re: 8x10 Polariod Portrait Prices ???

    Beyond the other considerations mentioned, the supply of 8x10 Polaroid film has been unreliable - it has been unavailable for months at a time, with the timing of its return always uncertain. Nor...
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    Re: Aperture scale on Isconar 180

    Dan, the L308 series meters read out in tenth-stop increments.
  19. Re: I take back every bad word I have said about Kodak...

    What actually happened is that after the new generation of films (T-Max, Ilford Delta) came out, both Kodak and Ilford modified their most popular FB and RC variable-contrast papers to have longer...
  20. Re: I take back every bad word I have said about Kodak...

    Both Kodak and Ilford sheet films are specified as being coated on a 7 mil (0.180 mm) polyester base. Fuji, Foma and Adox sheet films are specified as being coated on 0.175 mm polyester base. I...
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    Re: Shen-Hao TFC810A

    This is a non-folding camera with a maximum bellows extension of 450mm, not a good choice for close portrait work with longer-than-normal focal lengths. It really is optimized for general scenic...
  22. Re: I take back every bad word I have said about Kodak...

    The late Phil Davis had an article in the old Photo Techniques magazine showing the TMX curve shape to be highly sensitive to choice of developer. You can make the curve look a lot like that of TMY...
  23. Re: I take back every bad word I have said about Kodak...

    Among those who like TMY, I wonder what proportion are printing in silver in the darkroom, as opposed to scanning or working with alt-processes that want a very long density range.

    For those who...
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    Re: Wide angle lenses for 8x10

    FWIW, the 120 Nikkor SW is actually specified by the manufacturer to cover 8x10, just. (Nikon says 312mm at f/22.) With the 120 and 121 SA the specified image circle at f/22 is a bit short of 8x10,...
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    Re: Wide angle lenses for 8x10

    I have an 8x10 box camera built around the 120mm Super-Angulon. Stop way down - I'll usually work at f/45 or f/64 - and it can more or less eke out 8x10, especially if your point of focus is short...
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    Re: A new lens cleaning experience

    Per the MSDS, the ingredients of the basic Simple Green product ("All-Purpose Cleaner") are:

    Water 7732-18-5 > 84.8%
    C9-11 Alcohols Ethoxylated 68439-46-3 < 5%
    Sodium Citrate 68-04-2...
  27. Re: Does anyone on here use a lightweight matte inkjet paper?

    Yes! I've used UPPPM as a proof paper for Epson Hot Press Natural. They're not identical in behavior, but the UPPPM gets me close enough to save a lot of testing on the more expensive paper.
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    Re: safe haven for tiny formats

    Belated thanks for your kind words!
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    Re: safe haven for tiny formats

    http://www.orengrad.com/LFF/TS2019083000.jpg
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    Re: 14x20 camera build

    Say 14x20 and people will immediately think "Kenro Izu".

    Happy building! < thumbs-up emoticon >
  31. Re: Performance Between Apo Symmar and Apo Symmar-L?

    You cannot directly overlay the charts to compare them: the percentages on the x-axis refer to different absolute distances from the center of the field because they are defined relative to the image...
  32. Re: Performance Between Apo Symmar and Apo Symmar-L?

    Here are the MTFs for 150:
  33. Re: Performance Between Apo Symmar and Apo Symmar-L?

    The story when the Apo-Symmar L series was introduced was that some glass types required by the Apo-Symmar design had been phased out because of environmental regulations.

    The main functional...
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    Re: Ultra wide

    Fair 'nuf! I just put a ruler to the screen, and it looks like my eyes were deceiving me - the aspect ratio seems within bounds for the panoramic cameras after all. Sorry for the inadequately-baked...
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    Re: Ultra wide

    Hard to tell for sure because of the angle, but from the aspect ratio and the size relative to the hand, it looks as though it could be the Korona 12x20 banquet camera.
  36. Re: Want to build a portable zone focus camera for a Schneider 58mm super angulon

    Not even that, IMO, if one's eyesight is reasonably intact, one is sensitive to fine detail, and one enjoys contact prints by looking at them closely. If, if, if... but all those "ifs" just...
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    Re: Anyone Recognize this camera?

    Spend enough time on this site...

    https://www.piercevaubel.com/cam/

    ...and you should be able to identify it, or at least narrow it down considerably.
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    Re: Anybody like circular images?

    Kerik Kouklis describes how he controlled the image boundary:

    Kouklis had turned to the Korona to break out of a creative rut and loves the sweep of his images in the long, narrow format. But he...
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    Re: Anybody like circular images?

    IIRC, Bob Herbst used an 8x10 Hobo with 90mm Angulon for the round photos on this page:

    http://www.bobherbst.com/structural_elements.html
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    Re: Anybody like circular images?

    Kerik Kouklis also went through a phase of working within a circular frame:

    https://web.archive.org/web/20030207060358/http://kerik.com/newcirc.htm
    ...
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