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  1. June 2nd, 2012, 02:23 PM #1
    Paul A
    Paul A is offline New to S.C.
    Join Date
    Jun 2012
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    MF lenses with EM-5 focal length setting ??

    I have Hex 57mm 1.2 (AR) and an EM-5.
    the adapter is not here yet....just trying to get some homework done prior to.
    I can not select "57mm" with the EM-5 (IS+Info). The closest choice is 55mm.
    What is the consensus with this situation?
    Go with the EM-5's "55mm" choice or turn off IS?
    Thanks,
    Paul
    also... i read Radioactive lenses - Camerapedia ) that some manufacturer's of these "hot" lenses used up to 30%(by weight) of thorium oxide while others used lanthanum with thorium mixed in. these lanthanum based lenses can be 1/10 000 less radioactive.
    anyone know what category our lovely Hex AR 57mm 1.2 belong to (mine is s# 7509xxx).
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