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    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...
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    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....
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    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...
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    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...
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    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 ......
  6. 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.
    ...
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    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/
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    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
    ...
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    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...
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    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...
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    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...
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    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...
  13. 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 ...
  14. 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...
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    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...
  16. 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...
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    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...
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    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...
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    Re: ROLL CALL

    Hello from France!

    Roll Call started 14 years ago, and 14 years later I'm still here ;)
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    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...
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    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...
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    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...
  23. 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...
  24. 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 ;)...
  25. 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...
  26. 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...
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    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...
  28. Thread: Oslo

    by Emmanuel BIGLER
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    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...
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    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...
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    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...
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    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,...
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    Re: Hello from France

    Welcome to this truly International LF Forum!

    Your are not the only European here, and not alone at all, as a Frenchman!
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    Re: filters and portraiture

    Hi!

    In the past, portraits recorded on panchromatic film with tungsten light
    were recommended with a green filter.
    I do not remember, however, about the real reasons for that, not sure it...
  34. Re: Prontor Professional Shutter control questions

    From Jens
    ... two cable releases are my choice here.
    I prefer Prontor Prof. (and the last Compur shutters in black) over Copal...


    Same for me.
    When I bought my first LF lenses 19 years ago I...
  35. Re: 8x10 in Paris-Chamonix-Normandy-Dublin-Clonakilty

    I realize that for Chamonix I forgot to mention another well-known and very interesting cable car operating in summer: Planpraz / Le Brévent, it starts very close to Chamonix downtown and top is at...
  36. Re: 8x10 in Paris-Chamonix-Normandy-Dublin-Clonakilty

    A few words regarding the weather in Chamonix. Since your stay will be relatively short, 4 nights, weather conditions will be important to plan your program.
    Here is the English version of the...
  37. Re: 8x10 in Paris-Chamonix-Normandy-Dublin-Clonakilty

    Hello from France, I wish you full success in your photographic travel!

    Since the only place that you do not know so far is Chamonix, I'll start with a few words about this famous place in the...
  38. Re: Is "Bellows" a Singluar or a Plural name?

    He bellows about bellows.

    "They stood bellowing at each other."

    Fortunately, this never happens here (or: only virtually ;) )
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    Re: Focusing, glasses, & LF

    Hello from France!

    I've been a regular user of MF cameras with waist-level finders since several decades, and a happy user of a LF view camera since about 20 years now.
    Being also short-sighted...
  40. Re: Would spots of separation on rear lens affect image quality?

    The risk from those dendritic thingies is veiling flare more than loss of sharpness.

    Hi Dan! Exactly! At least this is my feeling.

    Actually, I just got, once, a lens affected by fungus. I...
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