For beginners, digital images and video frames are composed of pixels which are essentially points of colour, and each pixel contains colour information made of a combination of 3 primary colour channels, red, blue and green. The colour depth or bit depth determines the number of colours that can be stored and represented in each pixel. A 10-bit colour depth gives you 1,024 possible shades of each primary colour, and when the colour channels combine, each pixel could display approximately 1.07 billion possible colours. For comparison, an 8-bit colour depth allows for approximately 16 million possible colours in each pixel.
Our eyes are known to be capable of distinguishing approximately 10 million colours, which 8-bit colour depth can achieve. So why would video producers turn to 10-bit colour depth video recording?
10-bit colour depth, first and foremost, benefits data processing. In video post-processing, stretching the saturation and adding white balance often cause colour banding and would require heavy dithering by the end. A 10-bit colour depth recorded footage is largely free of the issue as a greater range of colour data is available for reproducing the scene in fine details.
The emergence of HDR screens also poses as a great opportunity for video content shot in 10-bit colour depth technology to shine. As HDR screens are capable of displaying a wider colour range at a higher contrast ratio than the average screens, 10-bit colour depth video files make the best out of the hardware with a colossal amount of graphic details to be shown on screen, making for the most vivid and realistic video displays.
Nikon Z 6 and Z 7 embraces the technology to empower video creators keen on producing professional-quality video content. With 4K UHD 10-bit output, extensive colour depth range allows you to record rich gradation information in a wide dynamic range, capturing every detail and providing flexibility in post-processing like never before.