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  1. #1

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    Weston Master II

    I have a Weston Master II exposure meter. I got it at a garage sale many years ago and never used it. Recently, out of curiousity I checked it to see how accurate it is. I found that the direct reading in Candela per foot squared is quite accurate but the dial would indicate wrong exposure.
    For example, 400 c/ft^2 which is EV15 for ISO100 but dial this value in the built in dial I would get 1/130@f/20 which is EV15 and 2/3. Using Weston rated speed of 80 for ISO100 I would get 1/130@f/18 which is EV15 and 1/3.
    It seems to get the correct exposure setting I would have to set the dial for ISO64 instead.

  2. #2
    Denis P.'s Avatar
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    Older Weston light meters used different speed ratings. The general formula states that Weston 80 equals 100 ASA/ISO. So, you're right that you should set the film speed dial to 80 (or even 64, as you say).
    Check also here: Weston meter

  3. #3

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    Quote Originally Posted by Denis P. View Post
    Older Weston light meters used different speed ratings. The general formula states that Weston 80 equals 100 ASA/ISO. So, you're right that you should set the film speed dial to 80 (or even 64, as you say).
    Check also here: Weston meter
    Amazing how these old Weston Masters continue to work so well !

  4. #4
    benjiboy's Avatar
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    I think the Weston 11 master meter came out in 1948, after around sixty years it's a miracle they work at all never mind accurately ,
    Ben

  5. #5
    Steve Smith's Avatar
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    Quote Originally Posted by benjiboy View Post
    I think the Weston 11 master meter came out in 1948, after around sixty years it's a miracle they work at all never mind accurately ,
    The miracle could be that they have had the cell replaced. A service which Megatron in the UK still offer.


    Steve.

  6. #6
    benjiboy's Avatar
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    Quote Originally Posted by Steve Smith View Post
    The miracle could be that they have had the cell replaced. A service which Megatron in the UK still offer.


    Steve.
    They may still do it Steve but there's no mention of it on their website now http://www.megatron.co.uk/homepage.html
    Ben

  7. #7
    edp
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    They did my Master V in October 2008, and I don't think their website mentioned it then either.

  8. #8
    ic-racer's Avatar
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    I'd do a Zone I test on an old meter anyway, and use the results of that test for my exposures.

  9. #9

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    Quote Originally Posted by benjiboy View Post
    I think the Weston 11 master meter came out in 1948, after around sixty years it's a miracle they work at all never mind accurately ,
    I have a W-M II and a V (neither has been "serviced"): both work well.

    I have several other "built in" selenium meters in various cameras: all work OK.

  10. #10

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    I bought mine at garage sale so I can't be sure but I believe it has not been recelled.

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