clipping

The Wonders of Log Images

Wonders of Log Images

Log images have become very popular since today every digital cinema camera manufacturer offers a log output option. But log images look weird and require completely different math operations than normal linear images so they must be converted to linear before working with them – most of the time. This article reveals the advantages of log images, how they work, and how to work with them.

Color Spaces of the VFX Pipeline Part 3: Camera Space

cameras in the vfx color pipeline

We saw in Part 2, the Real World, how scenes can have an enormous dynamic range that far exceeds our cameras. The inevitable result of this is the camera must clip the scene at its maximum brightness level, so we will explore solutions to that clipping. Film, on the other hand, does a soft clip at the shoulder of the film response curve that is far more elegant. Cameras also perceive color differently than our eyes and those differences must be understood and accounted for. Cameras also introduce their own digital idiosyncrasies to the image such as rolling shutter and digital noise due to their electro-optical design. This too must be understood that we may compensate for them in our work.

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