Het Zeiss 135mm f/2 Apo Sonnar T* Topic

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  • January 21, 2017 at 21:57 #11092
    Theunissen
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    KeesScherer wrote:

    Diffractie issue ja, diafragma nee. Letterlijk zegt Jerry: “diffraction effects from aperture vignetting” en verderop zegt John Hayes: “You will see the exact same artifact from baffle tube vingetting in a SCT used at wide angles with the HyperStar.”

    Terugkomend op het diffractie issue van 135mm lenzen met de volle f2.0 opening, afknijpen tot f2,8 lost dit probleem op.

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