ARRI Tech Talk: ALEXA LF/ Large-format image

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  • Опубліковано 5 лис 2024

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  • @Madsterforever
    @Madsterforever 5 років тому +12

    A video on Arri Alexa 65 please

  • @Kurosawa3
    @Kurosawa3 Рік тому

    Good insights, but I kept wanting to see examples during the talk.

  • @RoadSurferOfficial
    @RoadSurferOfficial Рік тому

    I feel like you missed out on the fact that in theory you should be able have a larger aperture than F2.8 with the exact same DOF as a super35 sensor. That means more light into the camera, in turn means less gain required from the ISO. Am i correct? That’s a huge selling point IMO.

    • @ARRIChannel
      @ARRIChannel  Рік тому +1

      Hey there - this is always a tricky topic. If you use the same 35mm lens at T2.8 on two separate cameras, one with a Super35 sensor and the other with large format, then the depth of field will be identical, but the LF camera will capture a wider image. If you compensate by using a longer focal length on the LF camera, so that the field of view of both cameras is identical, then the LF camera will have a shallower depth of field at the same T stop due to the longer focal length.

    • @RoadSurferOfficial
      @RoadSurferOfficial Рік тому +1

      Oh right, Barry Lyndon by kubrick comes to mind. Thanks for the thorough explanation.

  • @outsideworlds
    @outsideworlds 6 років тому +9

    Marc, I love your tech talks, but I think you may be wrong on one point. The only thing that changes visual compression is how far you are from a subject, not the lens you use. if I shoot on a s16 camera like the BMPCC from 1 meter away with a 12mm lens, I will have the exact same visual compression as if I shoot with the Alexa mini from one meter away with a 24mm lens or the Alexa LF from one meter away with a 36mm lens. If you don't believe me, please please test it yourself.

    • @h4328
      @h4328 5 років тому +3

      Not if T-stop remains constant - check out Steve's explanation www.yedlin.net/170504.html

    • @navdragoni
      @navdragoni 5 років тому +2

      @@h4328 this article is great but it seemed to me It was saying the same as The Outsideworld here. Visual compression is a product of perspective, and perspective just depends on camera placement. The only thing that changes is that some wider lenses could have distortion, and that with a larger sensor you have to use a longer focal lens and smaller aperture to match the field of view and depth of field of smaller sensors.