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    Home»Canon Patents»Patent: CN-E 20-100 T2.8 & CN-E 20-120 T2.8-T3.5
    svg+xml;base64,PHN2ZyB2aWV3Qm94PScwIDAgNzI4IDEwMjQnIHhtbG5zPSdodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2Zyc+PC9zdmc+ - Patent: CN-E 20-100 T2.8 & CN-E 20-120 T2.8-T3.5

    Patent: CN-E 20-100 T2.8 & CN-E 20-120 T2.8-T3.5

    By Canon RumorsAugust 12, 2015Updated:August 12, 2015No Comments1 Min Read Canon Patents
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    Here we have another patent for more cine lens optical formulas. This time for two lenses, a CN-E 20-100 T2.8 and a CN-E 20-120 T2.8-T3.5.

    I'm starting to think we're going to see some new cinema lenses this fall once the EOS C300 Mark II begins shipping.

    Patent Publication No. 2015-18083 (Google Translated)

    • Published 2015.1.29
    • Filing date 2013.7.10

    Example 1

    • Zoom ratio 6.00
    • Focal length 21.00 87.93 125.94
    • F number 2.77 2.77 3.66
    • Half angle of 35.54 9.68 6.79
    • Image height 15.00
    • Overall length of the lens 314.76
    • BF 50.03
    • Example 2

    Zoom ratio 5.00

    • Focal length 20.00 69.46 100.00
    • F number 2.76 2.77 2.77
    • Half angle of 36.50 12.03 8.42
    • Image height 14.80
    • Overall length of the lens 294.44
    • BF 50.07

    Canon patents

    • Positive and negative positive and negative positive five-group zoom
    • Inner focus (part of the first group)
    • Inner zoom
    C300 Mark II cinema eos CN-E 20-100 t2.8 CN-E 20-130 T2.8-3.5
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