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  1. Replies
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    Re: Hasselblad Flextight 343

    Lynn Radeka- an assistant to Ansel Adams- is mosaic-scanning his 4x5 film with digital cam. Check out his fabulous work with contrast masking. I have great hopes in Sigma L-Foveon FF announced for...
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    Re: Polaroid 8x10 w/81-05 holder

    Fuji-Kodak-Polaroid

    Kodak lost the patent-fight and sold their tech to Fuji. Thats why Fuji learnt from KODAK mostly since the Kodak-instant-color were more natural than Polaroids when...
  3. Re: Schneider Hi End Back and Schneider Vacuum Backs

    Now we would like also to read the manual, thanks.
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    Re: Focusing error

    what is p and x?
    Have the very same FL and Zone Z1 is too short. have all data only want to prove with this formula.
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    Re: Chamonix camera 45N-1 focusing error

    i will go the very same test with Sekor 150mm blue(razorsharp lens even fully open) of MUP/S23-system. its a the calibrated lens, was never off in my hands. only didnt have the values present when i...
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    Re: Chamonix camera 45N-1 focusing error

    1. "5m away subject, a 1mm focus shift towards the user means a 86cm focus shift in the "object space"
    meaning 5m minus 0.86m right?
    2. can you give us the calculations how you got the other shifts...
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    40,896

    Re: Chamonix camera 45N-1 focusing error

    if the 90mm angulon has that much shift couldnt the smaller COC(if true) be the reason? smaller COC=shallow/less DOF= better resolution
  8. Replies
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    40,896

    Re: Chamonix camera 45N-1 focusing error

    i like people who read the ignorants the "leviten". Had the very same "problem" ignoring the diffraction problem (at 11/16)in newly designed lens in newest Horizon S3Pro and other versions. proved...
  9. Re: Scanning 4x5: Buying an Epson Flatbed VS my current DSLR (5DII) VS Lab Scans

    get 850 altogether. have 4990.
  10. Re: Fresnel screen focus distance is different from ground glass

    not really LF but anyway interesting since the same problems.

    1. have both brightscreens by rick oleson.
    http://rick_oleson.tripod.com/index-175.html
    bought for kiev 60. its 1.56mm(micrometer...
  11. Re: Fresnel screen focus distance is different from ground glass-Ron Wisners position

    199006
    Ron Wisner has a very precise statement about Fresnel and Groundglasses. see pdf above.
    Link at the end here is dead. got the pdf from archive. its also stored in filesection of FB...
  12. Re: Where does one get custom ground glass from these days?

    NB: I am currently precisely testing Dora Goodman Zone Z1(Mamiya Universal Press/Super 23-lenses and Graflok 23/G-backs(at least some are matching....).
    I have been checking focus by comparing with...
  13. Re: Where does one get custom ground glass from these days?

    Maybe Groundglass and Fresnel from 3s-krpc ebay. seller of Cosmic Circle cameras, 18° and other branded stuff. I have a fresnel only not yet checked ontop of Polaroid MP3-Groundglass. he told it...
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    Re: Sinar auto Shutter

    The Large Format Handbook of the SINAR System
    by Carl Koch, C. Marchesi, Jost J. Marchesi
    Paperback, 148 Pages, Published 1986
  15. Which shutter-speed is park-position when not in use?

    Which shutter-speed is park-position when not in use?
    Thanks
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    Re: Schneider 58mm XL datasheet

    in FB Large Format Photography files-section i uploaded two schneider-kreuznach-files from archive dot org. all data in two files also link to wayback-archive. max. is 10mb. total: 16mb. maybe they...
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    Re: 200 mm Imagon mount for Graflex

    means when one wants to mount the copal 3 for HB and other cams-use register will be altered and infinity not reached. so a different helicoid-solution must be found. with 32mm fewer lenght....
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    8,215

    Re: 200 mm Imagon mount for Graflex-Rodenstock-links

    yesterday was a heavy day. had finally found out how to mount the lens. but have still no clues where the copal 3 will go. it needs M58-0.75mm thread. maybe someone could show a setup. I didnt find...
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    Re: 200 mm Imagon mount for Graflex

    Schmachtenburg of Solingen(famous german town for knives)

    Minimacro - Maximacro given up(dont know why):

    Bob i have a big problem now or two:
    cannot find the Rodenstock-prospectus anymore....
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    Re: 200 mm Imagon mount for Graflex

    Burghard Schmachtenburg
    I must have still some prospectus
    i have the Zörkendörfer(Zoerkendörfer)200 with HB-V/F and one more helicoid for P67.and multifocus with Symmar 150 RZ67.
    Zoerk was a...
  21. Re: Lightweight 4x5 Rangefinder camera build (Polaroid Mod)

    doesnt option8 make such conversions? and there a another guy on FB.
  22. Re: Lightweight 4x5 Rangefinder camera build (Polaroid Mod)

    I have that fujinon W.125mm needed compur shutter(or copal 0) for 150mm apo since i killed copal 0. has good reputation for landscapes. google the fujinons.
  23. Re: Lightweight 4x5 Rangefinder camera build (Polaroid Mod)

    Chaminox. Newest version of Minox?
    btw Cosmic Circle once had a rangefinder for sale on ebay. i have images.
    they are about to create now shorter than 58mm 4x5-bodies. no rangefinders. most...
  24. Re: Vacuum Film Holders : Hole Diameter / Vacuum Pumps

    Have two MUP 67/220 vers 3 vaccum-backs. concept is totally wrong. wrong pattern at wrong position(check where in RB67/70 vauum-back)
    and holes too big. yet to be tested. one has a...
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    Re: 4X5 rangefinder from China

    i think we have deeper discussions(2) on photrio. new cams coming slowly.
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    Re: Svedovsky Cameras, anyone?

    5x7, 8x10, 11 x14 cameras
    http://svedovsky.com/
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    Re: New compact 4x5 camera from China

    More cameras are planned also new types. Cosmic Circle 4x5(he told price should be higher than 248 usd and he currently wants it to keep down for promotional reasons) will now have Universal...
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    Re: "Sky Bow" -- Chinese 4x5 rangefinder

    i am in contact with 3s-krpc on ebay. they are currently designing new cameras but we must have patience he told.the cosmic circle e.g will have 58-65mm options. pinhole seems 62mm. he will confirm....
  29. Re: Remote shutter releases for large format lenses

    Prontor Professional Timer 2-32 sec.
    First version was a non-perfect workaround with a DIY-adapter(from a cable-release prolonger) which had to reduce the hub. could be i showe that here but did on...
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    Re: Noblex Large Format Shutter

    Prestor 8 i have prospectus. dont have.
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    Re: 210mm lenses in Copal 0?

    the poor ones cannot afford those 100 usd-adapters right. for that reason i mentioned Bielarus company Rafcamera. 1/3 of that.
    And there will be more new affordable new products coming from...
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    Re: 210mm lenses in Copal 0? Apo-Gerogon Copal-1 Adapter at Rafcamera

    Rafcamera made multiple adapters for use of processing lenses for different purposes. One is for Apo-Gerogons 210 and 240/9.0 on Copal 1. M40x,75-M50x,75F(we omitted writing 0.75 instead ,75),they...
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    Re: Richard Avedon Flip Down Reading Glasses

    was in a german optician shop.he told it could be possible to make. must get new glasses anyway. plus the clipon one. Zeiss made huge investments in new technologies.Fielmann now also has...
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    Re: Richard Avedon Flip Down Reading Glasses

    These are crap, i only have a monocular. Reason: one must always correct position, at least the monocular. the real loupe is sitting right in front of the eyeglasses i have a double-loupe and its no...
  35. Re: Difference between Sironar n and Sironar s

    the differences could better be tested by using Mamiya RB 67/70 vaccum back. I have now images of the back from an altered version (to use also 61.5mm/120/220 films)converted by Vermeercameras/Cezary...
  36. Re: Kang Rinpoche S 600 F11.5 (Chinese Fujinon C 600mm )

    nothing there or hidden. when i click store he has nothing. whats you experience. i seed some stuff but outside store.
    strange.
  37. Re: Kang Rinpoche S 600 F11.5 (Chinese Fujinon C 600mm )-HQ affordable stuff coming!

    There will be much more phototechnical(cameras, HQ-lenses)-surprises from asia a trustful source told me. Affordable stuff!
    see e.g. Irix(the brand from an HQ-optical company in switzerland which...
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    Re: Copal 1 to copal-0-shutter- adapter-Different use

    I had the same idea. or similar. will use pinhole-stuff Copal 0 from shinkfoto on Copal 1-Shutter Zoneplates and Zonesieves need shutter since exposure time are short. and register must match also...
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    Re: 4X5 rangefinder from China

    There must be a thread about the western name of the chinese 18° cameras. Cosmos Circle 4x5
    pinhole-shutters are complete sets. pinhole-plates integrated. one cannot replace e-g by replacing the...
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    Re: 4x5 roll film adapter

    here is the first thread about the same aperion 4x5 motordrive
    http://www.largeformatphotography.info/forum/showthread.php?758-4x5-Film-motordrive
    see message of mine with Jan 26th 2016 with...
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