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I'm working on a Grass Valley Infinity and for a specific application I need to know the image plane position (ie sensor position).Grass Valley Infinity

But I can't find the image plane mark like this : enter image description here

So I have two question :

  1. Is someone know any informations about this on the Grass Valley Infinity ?
  2. Is there always an image plane mark on a camera ? I thought it was a "norm" for professional cameras.
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