ARRI Digital Camera System
Measuring Sensitivity and Contrast Range

Sensitivity Comparison
Additional comparison images
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In our extensive discussions with cinematographers it was clear that the camera's sensitivity and contrast range are more essential than having more pixels. Unfortunately, there is neither a standard method for measuring sensitivity and contrast range, nor a standard across different industries for how to express those photometric performance characteristics in product literature. With different approaches used in cinematography for features and TV, ARRI proposes we compare cameras with practical tests.

Using the ARRI Dynamic Range Test Target (DRTC), the following measurements were made comparing the new ARRI digital camera prototype to a competitive camera used for digital cinematography.

ARRI News Article Measuring Sensitivity and Contrast
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Photometry comparison
ARRI ALEV III sensor prototype/competitor

First field with Modulation is just before clipping Gamma 0.6
The new ARRI Dynamic Range Test Chart provides more than 15 f-stops dynamic in one test chart. An overlay with spatial content clearly shows the clipping points of a camera system.
Darkest field above noise level Gamma 3

DOWNLOAD Current ARRIFLEX D-21 software update: Version 1.16