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Thread: How much a 30 cm heliar should weighs ?

  1. 17-Jun-2015, 11:55 #1
    TML74
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    How much a 30 cm heliar should weighs ?

    I have found an heliar ?0 cm but it is supposed to be a 50 cm f/4,5 but as fas as I know it doesn't exist, it should be a 30 cm or a 60 cm, probably a 30 cm... so knowing the weighs of a 30 cm could help to identify which lens it is...
    Thank you for your help.
    Thierry M.L.
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  2. 17-Jun-2015, 12:07 #2
    DrTang
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    Re: How much a 30 cm heliar should weighs ?

    2 or 3 pounds in shutter I'm guessing.. I'll weigh it when I get home
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  3. 17-Jun-2015, 18:19 #3
    DrTang
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    Re: How much a 30 cm heliar should weighs ?

    3 pounds / 6ounces - with a #5 compound shutter
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  4. 17-Jun-2015, 22:40 #4
    TML74
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    Re: How much a 30 cm heliar should weighs ?

    So it must be a 30 cm, thank you, Thierry M.L.
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  5. 18-Jun-2015, 09:33 #5
    Tim Deming
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    Re: How much a 30 cm heliar should weighs ?

    Measuring the lens glass diameter will also sort out this question quickly. A 60cm heliar has glass that is substantially larger than the 30cm.

    Cheers

    Tim
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  6. 18-Jun-2015, 11:48 #6
    TML74
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    Re: How much a 30 cm heliar should weighs ?

    "Measuring the lens glass diameter" on a photo without reference it is not so easy... but it is definitivly a 30 cm...
    Thank you.
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  7. 19-Jun-2015, 05:32 #7
    Tim Deming
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    Re: How much a 30 cm heliar should weighs ?

    How do you weigh a lens in a photo?

    ��

    Tim
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  8. 19-Jun-2015, 09:18 #8
    Taija71A
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    Re: How much a 30 cm heliar should weighs ?

    Quote Originally Posted by Tim Deming View Post
    How do you weigh a lens in a photo? �� Tim
    Exactly...

    I too just found a Heliar!
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  9. 21-Jun-2015, 13:14 #9
    TML74
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    Re: How much a 30 cm heliar should weighs ?

    How do you weigh a lens in a photo?
    I can't here is why I ask here...
    Thierry M.L.
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