Author Topic: Monoprice 27" 4K RTD2795 IPS Review: Matte 27" 3840x2160 AHVA with AMD Free-Sync  (Read 2266 times)

NCX

  • Administrator
  • Hero Member
  • *****
  • Posts: 758
    • View Profile

The Acer XB321HK (4K Matte AHVA), Monoprice 274K (4K Matte AHVA) and Viewsonic VP2780-4K (4K Matte AH-IPS) are included in the calibration result chart since I tested them all recently with my Spectral C6 HDR2000 colorimeter. The Monoprice monitor is a budget display while both the Acer and Asus are flagship 4K monitors, but they do not offer significantly superior performance. The Viewsonic VP2780-4K is slightly more accurate and suffers from less banding since it has a properly functioning 14 bit 3D Look Up Table (LUT), but it does suffer from significantly more white glow when displaying dark content.

Monoprice 274K Warm Menu Settings versus Calibrated

Monoprice 274K Un-Calibrated vs Warm by Deepinthesky Teslastorm, on Flickr
[/b]

The Warm setting reduces the preset green tint which is mainly visible when viewing grey shades and white. The point of the below photo comparison is to show that there is not a big difference between the best preset setting the 274K offers versus the calibrated (menu corrections only; no ICC profile) results. Enabling the ICC profile (made with an SpectraCal C6 HDR2000 colorimeter and DispcalGUI) barely results in visible changes since the monitor is fairly accurate out of the box, and because the preset green tint can be nearly eliminated by using the Red, Green and Blue settings in the menu.

As mentioned in the Default Color Preset section of the review I could not properly calibrated the Monoprice 274K using the 2.0 gamma setting in the menu which closely matches a linear 2.2 gamma curve. When the gamma setting is changed the grey, primary and secondary color balance becomes less linear or skewed and could not be corrected without the use of an ICC profile. Since the native gamma setting is fine I made the Red, Green and Blue corrections and Dispcal Gui for software calibration which creates an ICC profile which is enforced by Yasamoka's free Color Sustainer.

Once calibrated the Monoprice 274K is nearly as accurate and vibrant as a matte AHVA/IPS/PLS panel can be, especially since it uses a low glow panel with excellent uniformity. Grey and white purity is not as good as the significantly more expensive Viewsonic VP2780-4K, but still excellent, especially when considering the price. The Monoprice's main issue is not related to the quality of the panel, but is one caused by its fake frame-less casings perceived black depth reducing inner black bezel which is an issue some may consider nit picking and irrelevant.
« Last Edit: November 23, 2018, 02:49:41 am by NCX »