ASUS ProArt PA27AC 27-Inch WQHD HDR Professional Monitor

by Hilbert Hagedoorn on: 01/02/2018 09:51 AM | source: | 1 comment(s)

ASUS announced its 27-inch WQHD HDR professional monitor ‘ProArt PA27AC’ for graphic designers, photographers or anyone looking for high color accuracy. The 27-inch IPS LED-backlight monitor has a native resolution of 2560 x 1440 pixels and a rather shy 400 cd/m2 brightness for HDR.

Updated January 2, 2-18: Utilizing ASUS’ ProArt Calibration Technology – offers advanced adjustments including a 14-bit lookup table for color accuracy and 5×5 grid uniformity testing, 5ms (GTG) response time and 178/178 degree viewing angles, the ProArt PA27AC comes equipped with built-in stereo speakers (2Wx2 Stereo RMS) and provides 2x Thunderbolt 3 (1x In, 1x Out) ports, 1x HDMI 2.0 port, 1x DisplayPort 1.2 port and 2x HDMI 1.4 ports.

27-inch WQHD IPS display with frameless design
100% of sRGB color gamut, pre-calibrated for excellent color accuracy (ΔE < 2)
HDR function makes it possible to create more dynamic and realistic images
Thunderbolt™ 3 supports data transfers at up to 40 Gbps, and USB-C with Power Delivery provides up to 45W of power to external devices
ASUS ProArt™ Calibration Technology offers advanced adjustments including a 14-bit lookup table for color accuracy and 5x5 grid uniformity testing

ASUS ProArt™ PA27AC is Worldwide 1st 27-inch HDR400 with Thunderbolt™ 3 professional monitor. It features WQHD IPS panel with a 4-side frameless design and a wide 100% of sRGB color gamut. Up to 400 nits of brightness and HDR-10 provide lifelike experience. PA27AC features Thunderbolt™ 3 USB-C ports supports data transfers at up to 40 Gbps, DisplayPort and also support 45W power delivery. Advanced ProArt™ calibration technology and factory pre-calibrated to ensures the color accuracy (∆E < 2). With Windows- and Mac OS-certified, PA27AC is ideal for graphic designers, photographers, or anyone looking for high color accuracy.

Price is TBA.

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EJocys
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#5506328 Posted on: 01/02/2018 12:10 PM

There is a reason why real HDR monitors have minimum requirement of 1000 cd/m² for monitors and 4000 cd/m² for projectors. It is because realistic mid-day scene requires 700 cd/m² and sky over 2000 cd/m². Anything less and day scenes will start to look more like like dusk or dawn. Some low quality theatres are killing 3D cinema with not enough brightness, because even mid-day bright scenes looks dark and de-colourised, because human eye is switching to monochromatic vision under low light conditions.

Factor
(cd/m²)    Multiple    Value    Item

----------------- --- HDR Projector Range Start
         0 µcd/m² Ideal black body
10^−6    1 µcd/m² Absolute threshold of vision
10^−4  400 µcd/m² Darkest sky
----------------- --- OLED HDR Monitor Range Start
10^−3    1 mcd/m² Night sky
         2 mcd/m² Typical photographic scene lit by full moon
         5 mcd/m² Approximate scotopic/mesopic threshold
----------------- --- LED HDR Monitor Range Start
10^−2   40 mcd/m² Phosphorescent markings on a watch dial after 1 h in the dark
10^0     2  cd/m² Floodlit buildings, monuments, and fountains
         5  cd/m² Approximate mesopic/photopic threshold
10^1    25  cd/m² Typical photographic scene at sunrise or sunset
        30  cd/m² Green electroluminescent source
        55  cd/m² Standard SMPTE cinema screen luminance
        80  cd/m² Monitor white in the sRGB reference viewing environment
10^2   250  cd/m² Peak luminance of a typical LCD monitor
----------------- --- OLED HDR Monitor Range End
       700  cd/m² Typical photographic scene on overcast day
----------------- --- LED HDR Monitor Range End
10^3     2 Kcd/m² Average cloudy sky
         3 Kcd/m² Moon surface
         5 Kcd/m² Typical photographic scene in full sunlight
----------------- --- HDR Projector Range End
         7 Kcd/m² Average clear sky
10^4    10 Kcd/m² White illuminated cloud
----------------- --- Human eye comfort / Hi-End HDR limit
        12 Kcd/m² Fluorescent lamp
        75 Kcd/m² Low pressure sodium-vapor lamp
10^5   130 Kcd/m² Frosted incandescent light bulb
       600 Kcd/m² Solar disk at horizon
10^6     7 Mcd/m² Filament of a clear incandescent lamp
10^8   100 Mcd/m² Possible retinal damage
10^9   1.6 Gcd/m² Solar disk at noon

Luminance Source: https://en.wikipedia.org/wiki/Orders-of-magnitude-(luminance)

Human eye experiences up to 90 000 nits (cd/m²) per day. These popular standards exists to cover this:

* HDR10 for LED (0.05 nits black, ≥1000 nits peak, 10-bit color depth)
* HDR10 for OLED (0.0005 nits black, ≥540 nits peak, 10-bit color depth)
* Dolby Vision for Cinema (0 nits black, ≥4000 nits peak, 12-bit color depth)

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