Canon is written Canon, not Cannon. The EI is basically what you "rate" the optimal exposure of the sensor to be, analogous to film being rated as 25 or 250 or 500, etc. In digital cameras this determines where the signal falls within the dynamic range of the sensor. Think of it as the equivalent of creating a "dense negative" in the film world.
Where this affects production and post is how this informs lighting decisions. Let's say it is a"250" camera and you set it to be 1000. Now you are "seeing" deeper into the blacks. Therefore, there may be a tendency to under-light the scene, because you can "see" everything. But in reality, what you see is noisy, which you discover in post. OTOH, if you run it at 250, then you really have to add a lot of light to get to see what you want to see in the scene.
- Oliver
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Posted by: oliverpeters@oliverpeters.com
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this is the Avid-L2
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