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  1. Re: Wollensack Velostigmat 12" - your judgement please

    As a general rule, those sorts of scratches soften the contrast, not the focus. Expect lower contrast negatives with more open but muddier shadow detail. Resolution and spherical aberration (the...
  2. Re: Retaining ring for Wollensak 8x10 Rapid Symmetrical lens

    Then you might try getting a step-down ring of that size. Make it a big step and you'll have room to put some screws through it to attach it to the lens board.
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    Re: Need Grubb Lens Expertise

    The single-element macro auxiliary lenses for 35mm cameras are meniscus/Wollaston lenses. If you get them in 58mm, they screw right into the back of a Compur #3 or Copal #3 shutter. If you've...
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    Re: Looking for a budget 360mm for portraits?

    Freestyle has Bergger Pancro ISO 400 8x10, 25 sheets for $124.95, or about $5 a sheet. 8x10 wet plate is around $2 a shot. Emil does wonderful work with paper negatives at perhaps a dollar a shot. ...
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    Re: Looking for a budget 360mm for portraits?

    "Budget" is a pretty nebulous specification, meaning "whatever I find cheap", so it could be anything. The OP could find a "budget" Cooke Portrait Lens for under $50.

    Some lenses are cheaper than...
  6. Re: “Good composition is merely the strongest way of seeing.”

    I don't think it was the place that inspired the group. Rather, the group was together in one place and inspired each other, a more modern incarnation of the Hudson River School, the French...
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    Re: Soft-Focus Lens Examples

    Oh, I do like that! :)

    I'd ask which lens, but any answer would involve words...
  8. Re: Recommending Mary Alinder's Ansel biography

    There must be a dozen or more biographies and autobiographies of Ansel Adams by now. I'm waiting for some Ansel Adams fan-fiction...

    Death in the Darkroom, Chapter 1

    It was a dark and stormy...
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    Re: Banding in Negative

    Increased development along the edges is often an artifact of uneven agitation. I'd guess you're getting more aggressive agitation, hence increased development, along those edges.
  10. Re: Retaining ring for Wollensak 8x10 Rapid Symmetrical lens

    In lieu of finding one, you can always use the old ring-clamp trick. I cut down sewer connecters from Home Depot so I don't scratch the barrel.
  11. Re: LargeSense LS45 now available for purchase

    Only for internet posts. Petzvals are among the sharpest lenses in the image center.
  12. Re: LargeSense LS45 now available for purchase

    6.7 megapixels? Wow, that's almost as much as an obsolete cell phone camera...
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    Re: Meter & f-stop discrepancy

    That's just an artifact of standard modern electronic components using decimals.
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    Re: Leaving Kodak for Ilford paper developer

    Mixing it yourself isn't a big deal, I used to have my high school students do it. Mind you, it was at the height of the Harry Potter movies, so we called it "Developing Potion". And we labeled...
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    Re: Rodenstock Imagon

    My 420 and 480 are both coated and look to be quite post-WWII. Alas, the 480 suffers from snowflake separation, and I don't know anyone who fixes such things. Pity...
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    Re: Old lenses and optimal performance

    Also keep in mind that nineteenth century lenses were made for contact printing and direct-to-plate imagery like Daguerreotypes, tintypes, and Ambrotypes. Their results were never meant to be...
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    Re: Velostigmat Series II; Info and Images

    A nice image indeed!

    Dating the Velostigmats is tough, especially without seeing them. Shutter types and front engraving fonts are two hints. The Velostigmat Series II was introduced in 1909,...
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    Re: Velostigmat Series II; Info and Images

    As a general note, I did use the 12-inch for several portraits early in the thread, along with a 15.5, and it can still yield fine results even at a 9.5-inch "actual" focal length on 8x10. But maybe...
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    Re: Velostigmat Series II; Info and Images

    The 12-inch will still cover 8x10 at full soft. The 9.5-inch Velostigmat Series II will also cover 8x10 at infinity (barely), but not at modified full soft.

    A 9.5-inch Series II in a Studio...
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    Re: Industar-37

    The Tessars I use are Velostigmat Series II, Zeiss, B&L Micro Tessars, Industar-37, Ektar, Commercial Ektar, and a B&J Rembrandt. I often switch between lenses while shooting with strobes, CFL hot...
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    Re: Velostigmat Series II; Info and Images

    Yes, the modified lens is indeed a bit shorter in focal length. My 12" (300mm) Velostigmat Series II goes down to 9.5 inches (240mm), so about an f/3.6 at full soft. For that reason, it's good to...
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    Re: Industar-37

    I have yet to see a visibly yellowed Tessar, Zeiss or otherwise. Or one that suffers from light loss on wet plate compared to other lenses at the same aperture.
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    Re: Industar-37

    I disagree. I've shot hundreds of wet plates using coated and non-coated Tessars (including a 300mm Industar), and none have ever shown reduced speed due to either AR coatings or the type of glass. ...
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    Re: Some Soft Focus Lens Sales Information

    Seems like the soft lenses are holding their values well. A Graf Variable Soft Focus Anastigmat (9.5-11 inch) went for $1555 (+15 s&h). (#294217399084)

    Meanwhile, a 12-inch Ilex Paragon with the...
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    Re: Are all plasmats convertible?

    Other companies advertised their Plasmats as convertibles, like the Ilex/Caltar Acuton, which featured two aperture scales on the shutter.
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    Re: Are all plasmats convertible?

    All Plasmats are convertibles, as are all Dagors, from which the Plasmat descended. (Hint: "Dagor" is short for "Double Anastigmat, GOeRtz", so both cells are independently corrected for...
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    Re: Importance of back movements

    There is always distortion in photography. A man once showed Picasso a photograph of his wife to show what she looked like. Picasso replied, "Oh, is she that small and flat?"

    Like most...
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    Re: Importance of back movements

    True if you want keystone distortion for aesthetic reasons. But one can justify any method of doing anything for "aesthetic reasons", no matter how technically wrong it might be.

    Keystoning is...
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    Re: Importance of back movements

    Any back movements will cause keystoning, a big no-no in serious architectural documentation. Front and rear standards should always be plumb. Just use rise/fall to center the building as needed.
    ...
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    Re: Importance of back movements

    ...and then use front rise to center the frame on the building. No other movements are necessary.
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    Re: Importance of back movements

    Hence a bit of rise/fall/shift to get the lens' optical axis back on center, (if your camera has those movements.)
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    Re: Importance of back movements

    Movements for depth-of-field, i.e., the "Scheimpflug Effect", only work when you have one part of the frame at one distance and another part of the frame at another distance, and you tilt/shift to...
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    Re: Rodenstock 300mm Imagon on 8x10?

    The "Imagon Look" comes from using the h/stop disks with the little apertures open. I always likes using it with the conventional aperture, or wide open. The newer version in the modern Copal...
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    Re: Index Tabs to your film holders

    I just put a post-it note on the dark slide of each newly-loaded holder with the film type written on it. Pertinent information, (date, lens, intended development time) are added when shooting. The...
  35. Re: Will I Get Vignetting: Toyo 810G - 1200mm Bellows - Xenar 480mm f/4.5

    If the bellows sags at long extensions, that could block the light path. Just tuck the dark cloth or something else under the bellows at its midpoint to prevent the sagging. Other than that, the...
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    Re: Protar Lenses.

    The original Zeiss Anastigmat was renamed the Protar VII, because everyone who corrected their lenses for astigmatism called them anastigmats, and Zeiss wanted a name they could protect. That was...
  37. Re: How much dimmer on the ground glass is an f/9 lens vs a f/5.6? Or f/5.6 vs f/4.5?

    If you can find access to someone's view camera (since you don't have one yet), just set the lens at different apertures and compare focusing and brightness.
  38. Re: Does changing aperture move the focus point

    Quite right! Each different aperture disk allows light from different parts of the lens. As the Imagon has lots of spherical aberration (it is a soft focus lens, after all), the focus shift is...
  39. Re: Does changing aperture move the focus point

    Berenice was quite right in post #5.

    I'll add that focus shift is the result of spherical aberration, which is also the driving force behind the soft focus effect. The outer area of the lens is...
  40. Re: Wollensak Velostigmat Series II 12" inch f4.5 diaphragm shape

    Looks like an old Studio Shutter. Yes, their blades do get sticky and out-of-alignment.
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