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Acer Predator XB271HK 27″ 4K Monitor Review

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Colour Saturation Levels

While there are numerous colors the human eye can’t “see”, the human color space confined to three primary colors and combinations thereof. To make things easier for manufactures (and not waste resources displaying colors we can’t see) a color space was mathematically described and while various models do exist, the CIE RGB color space is the de facto standard.

In the below image, the dark triangle which isn’t highlighted is the sRGB color space while the overall CIE color space is displayed as the background colors. Meanwhile, the white triangle with highlighted color represents the results of what a given monitor can display. No monitor can display the entire CIE color spectrum but a good monitor should be able to display the sRGB spectrum of possible colors as this is usually used as the standard for image encoding.

A monitor which uses the “wide color gamut” moniker can display more than the sRGB spectrum and is considered primarily for professional use. If a monitor cannot cover off the entire sRGB triangle, the resulting image will appear “off” to an observer. The end result is a picture displayed on the panel which won’t be as rich, vibrant or as correct as it should be.

Thanks to the 10-bit IPS panel that Acer is using, the new XB271HK is an entirely different beast when compared its ancestor the XB270HU. Simply put this new monitor is capable of producing an ultra wide range of colors to near perfection. Brilliant stuff.

Default RGB Levels

An LCD or LCD LED backlit panel relies on accurately blending Red, Green and Blue pixel clusters to create an overall image so closer to each of these colours is to a “perfect” 100 output, the better and more accurate the default colors will be.

In this case, we have a low tolerance for anything less than perfection since any color shift can be noticeable even to untrained eyes and will require a color correction be applied at the software level to overcome a monitor’s stock output. We do however consider a minor variation of only a few points per color to be acceptable.

Overall this level of variance is within tolerances for the average consumer but if you take color fidelity seriously you will want to either invest in a colorimeter or have it professional calibrated.

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