Surprisingly, this seemingly dramatic approximation has little effect on the color, as our eyes are more forgiving to chrominance (color) than luminance (light).

With 4:2:0 subsampling, for every two rows of four pixels, color is sampled from just two pixels in the top row and zero pixels in the bottom row. As an example, 4K Ultra HD video has a spatial resolution 3,840 x 2,160 pixels - but the color of each pixel is derived from a much smaller sampling than that. This is often called color resolution, as compared to the spatial resolution, like 4K.

What is chroma subsampling?Ĭhroma subsampling is a separate beast altogether. Some phones support HDR now, and even some 8-bit displays can fake it using a technique called frame rate control (FRC). Thankfully, 10-bit displays are increasing as HDR TVs become more common. That’s 1,024 available values each for green, red, and blue, or a whopping one billion total combinations. As Hammond explains, however, you won’t always see this extra color information: Most screens only support 8-bit color.īut 10-bit color is your ticket to producing High Dynamic Range ( HDR) content. This effect is prevalent on YouTube where it is exacerbated by heavy compression, although many viewers may not notice it.īumping up to 10 bits multiplies the levels of color by four.

Now, 16.8 million sounds like a lot, but one common situation where you can notice the drawback of 8-bit color is in areas of light falloff from bright to dark, which may show up as disparate bands of shading rather than a smooth gradient. 8 bits means there are 256 levels (0 to 255) of each color, or roughly 16.8 million combinations in total. Panasonic GH5S masters the dark with a new 10MP, multi-aspect sensorīuilt for the GH5, new Atomos Ninja Inferno records 4K/60p over HDMIīit depth refers to the overall number of levels of red, green, or blue that a camera records.

Bmpcc 4k green screen