Dual Slope "Super-Dynamic" Range Expansion The SI-1280F and SI-640F can be used in a dual slope bi-linear mode, extending their useful dynamic range in scenes where detail in bright areas are to be preserved at the same time as maintaining details in darker regions.
Short Exposure Long Exposure Dual-Slope The image on the right has been captured in dual slope mode. Observe the detail visible both indoors (ie. under the table, Macbeth chart) and through the window (trees and houses). In normal linear response a camera requires a short exposure to keep the bright areas from saturation. However, the darker regions of the image would not have enough time to integrate charge (yellow curve). If the exposure is set longer the detail in the dark areas will become visible by the brighter areas will become saturated (pink curve).
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