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Thread: Cooke Portrait Lens Serial Numbers

  1. #121

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    Re: Cooke Portrait Lens Serial Numbers

    It's buried on page 4 of this thread but here is the link to Karl's spreadsheet:

    https://docs.google.com/spreadsheets...it?usp=sharing

    I doubt if TTH would sell a lens without proper engraving... maybe the lens hood has been changed? Could it be a prototype? Or one not completed in the factory that somehow found a way to the outside world?

    If the barrel is engraved with that patent number then it (the barrel) must date to at least when the patent was published (Dec 22nd, 1920) but that doesn't seem to sit well with a serial number of 38247.

    A mystery!

  2. #122

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    Mar 2019
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    Re: Cooke Portrait Lens Serial Numbers

    Serial number 13467 HD Taylor’s patents 'Unscrew three turns for sharpest definition' Series II f4.5 3 1/4 x 4 1/4 Equiv focus 8”
    Click image for larger version. 

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    What do you think, around 1900ish?
    Attached Thumbnails Attached Thumbnails BB03A00B-D47E-4B80-879C-F7599B975039.jpg   2DBA29FC-065F-40A6-8B6A-4AA4CB71F27F.jpg  

  3. #123

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    Dec 2019
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    Tokyo, Japan
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    Re: Cooke Portrait Lens Serial Numbers

    https://largeformatcameras.net/pictu...32/category/76

    Your cooke lens seems to be the 1st generation which was made from 1897 to 1908.
    The above catalogue dates 1906 and your serial number dates between 1900 and 1907 I suppose, since your lens’s focal length coverage engraving is not 5x7 the one on the 1907 catalog description.

    Are you sure for the engraving is 3 1/4 x 4 1/4 for 8”, isn’t the coverage 6 1/2 x 4 3/4 or the focal length 5”?
    I can’t read the engravings well from your pictures.

    https://largeformatcameras.net/pictu...3/category/107

    https://www.cookeoptics.com/t/compendium.html
    http://camera-wiki.org/wiki/Taylor-H...serial_numbers

  4. #124
    Tin Can's Avatar
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    Dec 2011
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    Re: Cooke Portrait Lens Serial Numbers

    Very interesting

    Thank you

    Quote Originally Posted by mhayashi View Post
    https://largeformatcameras.net/pictu...32/category/76

    Your cooke lens seems to be the 1st generation which was made from 1897 to 1908.
    The above catalogue dates 1906 and your serial number dates between 1900 and 1907 I suppose, since your lensís focal length coverage engraving is not 5x7 the one on the 1907 catalog description.

    Are you sure for the engraving is 3 1/4 x 4 1/4 for 8Ē, isnít the coverage 6 1/2 x 4 3/4 or the focal length 5Ē?
    I canít read the engravings well from your pictures.

    https://largeformatcameras.net/pictu...3/category/107

    https://www.cookeoptics.com/t/compendium.html
    http://camera-wiki.org/wiki/Taylor-H...serial_numbers

  5. #125

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    Mar 2019
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    Re: Cooke Portrait Lens Serial Numbers

    Quote Originally Posted by mhayashi View Post
    Are you sure for the engraving is 3 1/4 x 4 1/4 for 8”, isn’t the coverage 6 1/2 x 4 3/4 or the focal length 5”?
    I can’t read the engravings well from your pictures.
    I'm sorry for the terrible quality pictures! I'll attach better. Yes it's engraved for 3 1/4 x 4 1/4 with 8" equiv focus, as in the attached ad from 1904 (taken from Colucci's site)

    Click image for larger version. 

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    Attached Thumbnails Attached Thumbnails s-l1601.jpg  

  6. #126

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    Mar 2019
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    Re: Cooke Portrait Lens Serial Numbers

    Another picture
    Attachment 222232

  7. #127

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    Jan 2009
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    Denmark
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    Re: Cooke Portrait Lens Serial Numbers

    Well well, I never realized that the first Cooke soft portrait series II used the rear cell for adjustment, rather than moving the central lens forward as in later series II and VI. And the maximum soft position was with the cell screwed in!

  8. #128
    Tin Can's Avatar
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    Dec 2011
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    Re: Cooke Portrait Lens Serial Numbers

    I also noticed that

    We need a lens expert

    Quote Originally Posted by Steven Tribe View Post
    Well well, I never realized that the first Cooke soft portrait series II used the rear cell for adjustment, rather than moving the central lens forward as in later series II and VI. And the maximum soft position was with the cell screwed in!

  9. #129

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    Dec 2019
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    Re: Cooke Portrait Lens Serial Numbers

    Thank you rmdorman.
    I confirmed the engraving image coverage was at full aperture f4.5, 6 1/2 x 4 3/4 at f16 as shown in the 1903 catalogue.
    https://largeformatcameras.net/pictu...20/category/53

    The later 1906 catalogue simply states the image coverage 6 1/2 x 4 3/4 (at f16). I was confused.
    The 1907 catalogue changed to the 2nd generation so the image coverage at full aperture also changed to 5x7 in the table.

  10. #130

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    Mar 2019
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    16

    Re: Cooke Portrait Lens Serial Numbers

    Very cool MH! Thanks for solving that puzzle at least my initial “project it on the wall” test looked like an image circle at medium distance bigger than 4x5 at f4.5
    Yeah ST this won’t be as convenient as the knucklers y’all have haha. Good thing I’m an amateur and don’t have a line of portrait subjects out the door, I’m not sure how to adjust soft focus without removing the lens board. Can see why they upgraded the design.

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