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Thread: Show us your home made camera...

  1. #31

    Join Date
    Feb 2008
    Location
    France
    Posts
    28

    Re: Show us your home made camera...

    @ Jan Pedersen

    If you want to know more about us you can see this links
    Yes we drink Chablis with many glass.

    http://trichromie.free.fr/trichromie...c-ste-vronique

    You have your information ;-)

  2. #32

    Join Date
    Jan 2002
    Location
    Besançon, France
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    1,285

    Re: Show us ..[OFF-TOPIC Oregonian Riesling] plus : replacing helicals by.. ?

    [OFF-TOPIC]
    two bottles but did you

    Henri Gaud only allows disposable styrofoam coffee cups for wine tasting, in order that the proper temperature is maintained throughout the whole session

    I take the opportunity that we have and Oregonian citizen on-line : we should try to convince Henri Gaud to visit Oregon some day. He could combine some new photographic subjects for the tri-color process and at the same time enjoy some of the best Riesling wines of the New World.
    Does the Columbia river gorge (or wherever Oregonian Riesling is made) still produce those excellent white wines I experienced 20 years ago ?

    [NOW BACK TO THE TOPIC]

    An alternative to true helicals is simply to allow a wooden box to slide inside another.
    One should keep in mind the simple design rule:
    The amount of travel of the whole lens, required to change focus from infinity to one metre (3") is equal to the square of the focal length in milliimetres, divided by 1000.
    For examples with a 90 mm, the required travel is 90x90/1000 = i.e. about 8 mm (approx 5/16")
    This is still within reach of a wooden sliding box.

    For a 55 mm, things become tricky 55x55 / 1000 = about 3 mm (approx 1/8") ; there, you need an helical.

  3. #33
    Downstairs
    Join Date
    Feb 2008
    Location
    Italy
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    1,303

    Re: Show us ..[OFF-TOPIC Oregonian Riesling] plus : replacing helicals by.. ?

    Quote Originally Posted by Emmanuel BIGLER View Post
    [OFF-TOPIC]
    ...One should keep in mind the simple design rule:
    The amount of travel of the whole lens, required to change focus from infinity to one metre (3") is equal to the square of the focal length in milliimetres, divided by 1000.
    ...
    This is most useful. Thanks Emmanuel.

  4. #34

    Join Date
    Jul 2008
    Location
    Montreal
    Posts
    1,426

    Re: Show us your home made camera...

    Good food, good wine, good company and good photography,
    does life get any better?

    Well done Henri,
    c'est ginale.

    http://trichromie.free.fr/trichromie...oc-fvrier-2008



    Quote Originally Posted by Henri Gaud View Post
    @ Jan Pedersen

    If you want to know more about us you can see this links
    Yes we drink Chablis with many glass.

    http://trichromie.free.fr/trichromie...c-ste-vronique

    You have your information ;-)

  5. #35

    Join Date
    Feb 2008
    Location
    France
    Posts
    28

    Re: Show us your home made camera...

    @ Allen

    You can come in France
    The next "Sainte Veronique" en 2010 is for 6 fabruary about 18 h in afternoon
    You are welcome
    If you make some photography for change

    And you can drink Chablis with us

  6. #36

    Join Date
    Jun 2005
    Posts
    2,482

    Re: Show us your home made camera...

    Quote Originally Posted by Allen in Montreal View Post
    Good food, good wine, good company and good photography,
    does life get any better?

    Well done Henri,
    c'est ginale.
    Tant que c'est pas génital, ça va...
    GPS

  7. #37

    Join Date
    Feb 2008
    Location
    France
    Posts
    28

    Re: Show us your home made camera...

    Quote Originally Posted by GPS View Post
    Tant que c'est pas génital, ça va...
    You are right

  8. #38
    Nana Sousa Dias's Avatar
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    May 2008
    Location
    Ericeira, Portugal
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    730

    Re: Show us your home made camera...

    Here are some of the most perfect home made cameras I've ever seen.
    Part 1








  9. #39
    Nana Sousa Dias's Avatar
    Join Date
    May 2008
    Location
    Ericeira, Portugal
    Posts
    730

    Re: Show us your home made camera...

    Part 2








  10. #40
    Nana Sousa Dias's Avatar
    Join Date
    May 2008
    Location
    Ericeira, Portugal
    Posts
    730

    Re: Show us your home made camera...

    Part 3








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