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Thread: Need help with a Wheel Stop lens

  1. #1

    Need help with a Wheel Stop lens

    Hello,

    I have an old brass barrel lens, Rapid Rectilinear made by Beck, 101mm. It has the Wheel Stops for aperture adjustment. There are four aperture holes but they are marked with two aperture numbers per hole. I'm looking for help to properly read these numbers. They are labeled like this:

    16 f 16
    32 f 22-6
    64 f 32
    128 f 45-2

    I took a photo of it here:

    http://th08.deviantart.net/fs70/PRE/...ry-d5u315w.jpg

    Thanks for any help you all can give me. For now, I'm going to take a guess that each aperture is approximately between the numbers given. I've been using the first number for each stop and having good luck with it.

  2. #2

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    Re: Need help with a Wheel Stop lens

    The set ending in 128 is the old US system. The other set is the modern aperture scale. If you look up f-stop on Wikipedia, you'll find a nice cross reference table of various scales.

    Dan

  3. #3

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    Re: Need help with a Wheel Stop lens

    Quote Originally Posted by Fotoguy20d View Post
    The set ending in 128 is the old US system. The other set is the modern aperture scale. If you look up f-stop on Wikipedia, you'll find a nice cross reference table of various scales.

    Dan

    Dan is correct. This is a very slow rectilinear lens if wide open it is f16. If there is a set of glass elements at the front & at the rear, most likely is a rectilinera. If there is only the one set of elements that are seen in your photo, could be an achromatic doublet. My guess is late 1880s, into 1890s. "US" stands for "Uniform System," but it was mainly used in the U.S.

  4. #4

    Re: Need help with a Wheel Stop lens

    Thanks guys, that explains it all.

    Yes, it's a Rapid Rectilinear made by Beck. Great lens. Used it in the studio recently and it was clear as could be. A friend said about 1880 also and the info I found on this type of wheel aperture system said they were in use from 1850-1890. I love it though. Shot with it today also in perfect sunshine. It's just wonderful.

  5. #5
    (Shrek)
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    Mar 2011
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    Montreal
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    Re: Need help with a Wheel Stop lens

    Quote Originally Posted by Brassai View Post
    Dan is correct. This is a very slow rectilinear lens if wide open it is f16. If there is a set of glass elements at the front & at the rear, most likely is a rectilinera. If there is only the one set of elements that are seen in your photo, could be an achromatic doublet. My guess is late 1880s, into 1890s. "US" stands for "Uniform System," but it was mainly used in the U.S.
    Quote Originally Posted by Christopher52 View Post
    Thanks guys, that explains it all.

    Yes, it's a Rapid Rectilinear made by Beck. Great lens. Used it in the studio recently and it was clear as could be. A friend said about 1880 also and the info I found on this type of wheel aperture system said they were in use from 1850-1890. I love it though. Shot with it today also in perfect sunshine. It's just wonderful.
    Actually, it's a WAR, Wide Angle Rectilinear, not a Rapid Rectilinear ('RR'). f16 is normal for these, as is that focal length which should about cover 5x7. The wheel stops on these were used well into the 20th century, for space reasons I gather, as these small lenses don't have a lot of room for bladed apertures.

  6. #6

    Re: Need help with a Wheel Stop lens

    Yes it does say Wide Angle on it, but at 101mm I never thought of it as a Wide lens. It covers my Sinar P 4x5 with plenty of movement. I can go up or down on the back standard for the full movement without hitting the edge of the image circle. Gotta love that!

  7. #7

    Join Date
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    Wirral, UK.
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    216

    Re: Need help with a Wheel Stop lens

    From the Vade Mecum

    1888
    Autograph Wide Angle 100 3-9in WAR (noted 1888-1890)
    They were made in 1889 with a rotating stop plate as :
    No1 5x4 3in
    No2 6.5x4.75 4in
    No3 8.5x6.5 5in
    No4 12x10 7in
    No5 15x12 9in.

    Christopher52 is your lens engraved 101mm?

    Roger

  8. #8

    Re: Need help with a Wheel Stop lens

    The writing on the lens reads as this:

    4 inch
    W.A. RECT
    R&J Beck
    No 2534
    W.H.
    WALMSLEY
    & Co
    SOLE
    AMERICAN
    AGENTS

    That's all I can find on it. I got the 101mm from a conversion of 4 inches.
    This is really great info. Thanks for all the help you guys!

  9. #9

    Re: Need help with a Wheel Stop lens

    Here's a pic of the lens on my Sinar for a size reference. Very small lens but so sweet:
    http://th04.deviantart.net/fs71/PRE/...ry-d5ny231.jpg

    Here's a shot of my sister and brother-in-law I did last month for them. I did not have my behind-the-lens shutter at the time so I held my hat over it and uncovered it for 2-ish seconds. The exposure was about perfect on the negative. This is a scan of the print on RC paper in 8x10:
    http://th00.deviantart.net/fs71/PRE/...ry-d5ruded.jpg

    Here's a colour shot I did in the studio with strobes two weeks ago. The colours are beautiful to me. This is a scan of the 8x10 C-print on Fuji Crystal Archive II paper:
    http://fc04.deviantart.net/fs70/f/20...ry-d5tfcte.jpg

  10. #10

    Join Date
    Jul 2006
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    Wirral, UK.
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    Re: Need help with a Wheel Stop lens

    ]I have No. 2540 It came on a square bellows field camera I bought from Tasmania about 10 years ago.

    Nice shots

    Click image for larger version. 

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    Seeing as you have posted a picture of yours. I thought I'd post a picture of mine. My little lad decided to help.

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