ARRI Signature Lens 75 mm Prime
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Jon Pais

The Alexa 35 has 17 stops DR SNR=1. That means the sensor sees 17 stops. The camera’s got between 14-15 stops of dynamic range at EI 800 SNR=2. No cinema camera presently has 17 stops of dynamic range.

Art Adams

Can you show me your data? We tested 17 stops at SNR=1, 16 stops at SNR=2. And we’re conservative. We built our own dynamic range chart because existing ones produced more flare than we liked, which gives the appearance of more dynamic range.

Other companies will accept more extreme results, because you can see below SNR=1 by eye.

Regardless of what happens in the shadows, we’re unique in our overexposure headroom, which is one of the things that we had to design lenses around.

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