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Forums Cinematography Exposing for LOG

  • Exposing for LOG

     Tom Galli updated 8 months, 1 week ago 1 Member · 1 Post
  • Tom Galli

    November 17, 2020 at 10:33 pm

    Aloha all!

    I just got my first camera that records LOG footage, a JVC GY-HC500. There are 4 colorspaces available when recording in h.264: ITU 709, ITU 2020, Hybrid Log Gamma, and J-LOG 1.

    Doing some test shots outdoors, with bright sun on fluffy clouds, I used my zebra bars to get a good exposure for ITU 709 (f-11, 1/30, 1/64 ND, 0dB gain). I used that same exposure for all 4 colorspaces. I noticed that for HLG and J-LOG1, my zebra bars disappeared. (I like my zebras set for 90 – 100%).

    In post, I was able to bring the white back up for those color spaces, but it got me wondering if I should have opened up. I’ve been reading about LOG footage, and the phrase “expose to the right” keeps appearing. Internet wisdom says that it’s easier to bring down whites than to bring up blacks.

    When shooting LOG, should I increase the exposure to where my zebras are registering?

    Mahalo!

    Tom G

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