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Samyang 85mm f1.4 Hot Spot Evaluation

Discussion in 'Infrared (IR) Photography' started by RadarUK, Nov 8, 2018 at 2:57 PM.

  1. RadarUK

    RadarUK Premium Member

    Apr 3, 2013
    Likes Received:
    Co. Durham

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    Not the be all and end all of scientific tests but a quick try with the lens on a full spectrum converted X-E1

    680 nm ok from f1.4 to f4. Hot spot starts to show at f5.6 and progresses
    720 nm as above
    760 nm Hot spot starts to show at f4 and progresses
    850 nm Hot spot starts to show at f2.8 and progresses
    950 nm as above
    fugu 82-2 likes this.

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