Search:

Type: Posts; User: Emmanuel BIGLER; Keyword(s):

Page 1 of 42 1 2 3 4

Search: Search took 0.08 seconds.

  1. Re: Diy tripod, plans, advice and links to plans please

    from Mark Sawyer
    At my age, I'm wondering whether a balsa wood tripod would work...

    Why not? ;-) The legendary WW-II fighter/bomber De Havilland Mosquito was made of balsa wood!
    (ahem ... and...
  2. Re: Diy tripod, plans, advice and links to plans please

    Anyone made their own wooden tripod for 4x5 camera? Best options for economy of work, strength and stability.

    Hello from France!

    A friend of mine has built for himself a variety of wooden...
  3. Replies
    56
    Views
    1,567

    Re: How Early Could It Have Happened?

    Hello from France!

    Before the official disclosure of the daguerréotype process in 1839, Nicéphore Niépce had experimented with the bitumen process in the 1820s. Dates are not precisely known since...
  4. Re: Thread specification for Klimsch Apo-Ronar 1:9/600mm

    Hello from good ol' Europe!


    Three informations, in short, confirmations of what has already been said here:
    1/ I hereby confirm that the 600 mm Apo Ronat has been sold in the past, mounted on a...
  5. Re: Rodenstock Apo Sironar N or Apo Sironar S 150mm f/5.6

    from Sal Santanamura
    Rodenstock provided MTF graphs for ...

    ... M=1/20 for the N and M = 1/10 for the S and W, at least in the docs I have in my archives. But the objection is unchanged,...
  6. Re: Rodenstock Apo Sironar N or Apo Sironar S 150mm f/5.6

    Hi!

    You'll find here a comparative plot of MTF curves @f/22 and @20 cy/mm for the Apo Sironar N / S / W. Re-plotted from the official manufacturer's data sheet.

    At the center of the field,...
  7. Re: Profisix -luna pro relationship between EV and ISO speed

    Hello from good ol' Europe, Luigi!!

    As strange as it may seem, Exposure Values (EV) are not at all photometric units!

    They are simply a numerical index qualifying all couples (shutter speed -...
  8. Re: What are the options for Arca-Swiss in Europe?

    Otherwise, is it the case that arca-shop.de are the default dealer in Europe?
    Of course not, there are several Arca Swiss authorized dealers in Europe!
    But being a European, you know what the...
  9. Re: What are the options for Arca-Swiss in Europe?

    Hello from Besançon, France !

    I'm living at about 6km / 3.7 miles from Arca Swiss International ;)
    You should contact them directly here by phone and explain your problem.
    People at Arca Swiss...
  10. Replies
    13
    Views
    1,576

    Re: Missing exposure equation

    Hello from France!

    I have always found, for this kind of "photographic" calculations where a 4-digit precision is useless, that a good ol' dedicated analogue slide rule is more useful than any...
  11. Replies
    13
    Views
    1,328

    Re: source of new shutters

    Hi!

    If we are speaking about mechanical leaf shutters, Packard shutters do exist!
    https://packardshutter.com/

    Sure if you need speeds up to 1/60-th, Packard shutters are not what you need....
  12. Replies
    7
    Views
    698

    Re: Close up lens, how do they work?

    Good point, Bob, this howerer does not change at all my previous analysys, a cemented doublet is of course much better than a single lens element, since red, green and blue foci of an achromat are...
  13. Replies
    7
    Views
    698

    Re: Close up lens, how do they work?

    Hi!

    To understand how a close-up lens works, I prefer thinking in terms of images instead of thinking in terms of changed focal length or modified optical system.

    A close-up lens is a single...
  14. Replies
    41
    Views
    2,750

    Re: Lens for color

    Do you think APO is needed ?

    Hi!
    In the good old days, non-apo and non-coated lenses delivered superb color images!

    http://www.loc.gov/pictures/collection/prok/

    and more recently ......
  15. Re-calibrating an helicoid

    Hello from Good ol' Europe!

    Coming back to the original question of a de-calibrated helical mount, it is easy to estimate the required helical travel that will properly focus to infinity.
    ...
  16. Replies
    2
    Views
    497

    Re: Graflex SG service/repair in EU

    Hello from France!

    In France you can contact Laurent de Miollis through his web site
    http://www.speedgraphic.fr/
  17. Replies
    4
    Views
    437

    Re: Arca Swiss Lensboard Question

    Just for information, the current list of 110x110 mm F-line recessed lens board reads as follows:
    [date 2020-01-02]
    recessed 15mm, #0 hole, ref. 091001,2

    recessed 7mm, #0 hole, ref. 091004,2
    ...
  18. Replies
    4
    Views
    437

    Re: Arca Swiss Lensboard Question

    Hi!

    I have been using Arca Swiss 110 mm F-line lens boards since 19 years now, I have a variety of such boards, flat and recessed, old and new.
    I never had any problem with any of them.
    Boards...
  19. Replies
    18
    Views
    1,432

    Re: Copal 3 Shutter

    Hi!

    Be aware that among Copal shutters, there exist two different models labeled #3 and #3s

    all sizes in mm ___ Copal # : ______ 3s __________ 3
    1/ retaining ring thread _______ M61.0x0.75...
  20. Replies
    13
    Views
    1,098

    Re: Schneider 58mm XL datasheet

    Hi!

    tried for about an hour clicking

    I followed exactly the same route as yours and found the same missing pages, exactly like you, so I was prepared to give-up.
    Then I had the idea to look...
  21. Replies
    13
    Views
    1,098

    Schneider WA XL lenses datasheet - 38 - 47 - 58 - 72 - 90

    Hi!
    FWIW, I recently found this on web.archive.org

    super-angulon_xl_56_38.pdf illumination distorsion transmission - MTF curves


    super-angulon_xl_56_47.pdf illumination distorsion...
  22. Replies
    7
    Views
    1,122

    Re: 8x10 in paris yellow vest violence.

    Hello from France and many thanks to "jp" for finding this ... how to say?
    "weird" video (LF contents is very short and starts at about 0:45)

    The French MF+LF forum ...
  23. Re: Professional Photo Lab anywhere in Europe

    Hello from Besançon, France!

    I'm regularly using the services of the French lab PHOTON PRO located in Toulouse, France.
    http://www.labo-photon.fr

    They do process 8x10" [20x25 cm] film for E6...
  24. Replies
    9
    Views
    882

    Re: Greetings from Paris-France

    Welcome here, Michaël!

    You are not the only European member of this group, an not the only Frenchman.

    If you're not acquainted with galerie-photo.com and galerie-photo.info ...
    ... may be you...
  25. Re: Recommendations: Small 135mm with good coverage for 4x5 portraits?

    Hello from good ol' Europe!

    Now that three 3 out of 4 brands of the legendary "Gang of Four LF lens manufacturers" have been recommended, it is time to recommend the 4-th : 135/5.6...
  26. Replies
    55
    Views
    3,363

    Re: Choice for the Circle of Confusion?

    From Neil:
    ...that the circle of confusion should depend on print size. But, I'm uncomfortable with this.

    Hi Neil.
    You should not be uncomfortable with the idea of varying diameters for circles...
  27. Replies
    55
    Views
    3,363

    Re: Choirce for the Circle of Confusion?

    Hi Neil

    Very often, recommendations for the choice of a circle of confusion as found on the Internet come with no justification nor indications of the validity for the recommended value.

    0.033...
  28. Replies
    451
    Views
    63,586

    Re: ROLL CALL

    Hello from France!

    Roll Call started 14 years ago, and 14 years later I'm still here ;)
  29. Replies
    8
    Views
    740

    Re: Schneider 135 4.7 xenar coverage

    Good point, Pere. Since I purchased this 2.8-100 Planar alone and not with a Baby-Technika, I do not know if my lens was specially fitted for a certain camera, and I have actually no idea if this...
  30. Replies
    8
    Views
    740

    Re: Schneider 135 4.7 xenar coverage

    I've always thought of image circle in terms of....immediately goes black outside of image circle.

    Coming late to the discussion!
    Actually, lens manufacturers' specifications regarding coverage...
  31. Replies
    10
    Views
    1,010

    Re: Greetings from France

    Hello from Besançon, France, Victoria.

    Welcome on board. This is a truly International group with many active Europeans, including French!

    Regarding the 9x12 [cm] camera you inherited, by all...
  32. Re: Any information on Camille Desmoulins lenses?

    https://www.antiq-photo.com/en/collections/museum/technical-books/camille-desmoulins-petit-catalogue/
    You are perfectly right!
    May be the vendor had one for sale in the past, got a good price for...
  33. Re: Any information on Camille Desmoulins lenses?

    More information found, a small ~1895 paper catalogue is for sale here; of course do not expect this vendor to give a scan for free ;)...
  34. Re: Any information on Camille Desmoulins lenses?

    Hello from France


    Well, if combined keywords "Desmoulins lens" do not yield any result with your favorite web search engine, trying "Desmoulins objectif" in French immediately yields a first...
  35. Re: Determining aperture of antique brass lens?

    Hello from France!

    The method proposed by Steven Tribe is one of the best and simplest, provided that you know the real focal length of the reference lens, and will allow you with a simple ruler...
  36. Replies
    13
    Views
    1,850

    in Paris, Atget, the Carnavalet museum, the Marais district

    Hi!

    Normally I would recommend to all LF aficionados visiting the Old Paris to devote at least one half day to Carnavalet Museum.

    Carnavalet museum as an institution was one of the customers...
  37. Thread: Oslo

    by Emmanuel BIGLER
    Replies
    9
    Views
    1,026

    Re: Oslo

    Hello from good old Europe!
    If you are interested in great stories about exploration of the Arctic, I can recommend to visit in Oslo the museum dedicated to the famous arctic boat "Fram" built and...
  38. Replies
    13
    Views
    1,850

    Re: Lab in Paris

    I wish you a good stay in Paris.

    If you found accommodation downtown Paris, upon your arrival, probably at Charles de Gaulle airport, if you take public transports, during the first travels, be...
  39. Replies
    13
    Views
    1,850

    Re: Lab in Paris

    Hello from France!

    Another lab in Paris processing all kinds of films up to the 8"x10" format is Arka Labo.
    http://www.arkalab.com/arka-photo-lab-paris/professional-services/arka-address.php...
  40. Replies
    15
    Views
    15,803

    Re: Hello from France

    don't use Large Format, as it is addictive!

    Exactly, and therefore you should never look at any "classifieds" section on ANY forum.

    Never look here!

    And of course, never, ever look here,...
Results 1 to 40 of 1647
Page 1 of 42 1 2 3 4