What is the Image Bandwidth Index (IBI)?

The Image Bandwidth Index (IBI) is a metric that measures the total visual information captured per second. It's calculated by multiplying frame area by frame rate: IBI = Frame Area × Frame Rate.

Tiz is the unit of measurement for IBI. 1 Tiz equals 1 square decimeter per second (dm²/s). Standard 35mm film at 24 fps has an IBI of approximately 1 Tiz.

What is the IBI of K65K?

K65K achieves an IBI of 110 Tiz in 12-perf format at 400 fps - over 110 times the visual bandwidth of standard 35mm film.

How does K65K compare to IMAX?

IMAX 15-perf at 24 fps achieves approximately 18 Tiz. K65K at 400 fps achieves 110 Tiz - over 6 times the visual bandwidth of IMAX.

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Image Bandwidth Index

How much image per second?

The idea

Megapixels, resolution, frame rate — numbers that can't merge different technologies. We wanted a way to honestly express how much visual information a camera captures in one second, both film and digital. That's how the Image Bandwidth Index was born.

How it works

IBI = Frame area × Frame rate

Simple. The exposed area multiplied by the shooting speed gives you the total image surface captured every second.

The unit: Tiz

We named the unit Tiz: 1 Tiz equals 1 dm²/s (square decimeter per second). Not by chance, it roughly corresponds to the bandwidth of standard 35mm at 24 fps.

IBI Comparison (Tiz)

35mm standard

65mm 5-perf

15-perf

Digital 65 HS

K65K 12-perf

110

110 Tiz

Not marketing. Math.

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