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Thread: Question about using Lens

  1. #1
    Galaa
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    Default Question about using Lens

    I read from somewhere, that using TC lens will reduce the light coming in as the F stops are lowered(Me newbie so the words I use might not be correct).
    Is that true? And is it only for TC lens or does all lens lower F stops?

  2. #2
    Senior Member
    Join Date
    Jan 2002
    Location
    Singapore, Singapore, Singapor
    Posts
    6,405

    Default Re: Question about using Lens

    Originally posted by Galaa
    I read from somewhere, that using TC lens will reduce the light coming in as the F stops are lowered(Me newbie so the words I use might not be correct).
    Is that true? And is it only for TC lens or does all lens lower F stops?
    The TC meant for SLR cameras will reduce 1 or 2 stops depending on its power (1.4x will reduce 1 stop, 2x will reduce by 2).

    A properly made TC meant for digital cameras (those which attach in front of the lens) will not have any light reduction. At least the Nikon TC-E2 doesn't. In any case, you should not need to worry. Your camera will automatically take care of the exposure, no additional settings are required.

    Same applies for wide convertors.

    Regards
    CK

  3. #3

    Default

    Yes, It is generally true.

    Be it a TC, Marco or any lens, there will be some drop in the F-stop and that by how much will depend on the lens itself.

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