4 comments on “630nm & 665nm Enhanced Color

  1. Thanks for your answer. Actually, i know what was wrong. I could see the same “circles effects” on the sensor. It appears to be oil because the marks “moove” when i tried to clean it. I sent it for repair.

  2. Hello, i have a full spectrum 300d and a 630nm filter which i use with old takumar lenses. The lenses are in perfect functionning condition. But i have a big halo issue. Whith every lenses (28mm, 50, 135mm) i always have a halo at the bottom of my pics. I tried differents exposures, differents white balance but it still here. And when i remove the filter (B+W 091) the halo disappear. Do you have an idea of the matter please ? Thanks a log for your blog by the way.
    Emmanuel

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