Author Topic: ViewSonic VX2458-mhd Review: Matte 144hz 1080p TN with AMD Free-Sync  (Read 16116 times)

NCX

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Vertical Gamma Shift & Viewing Angles
« Reply #15 on: April 26, 2019, 03:58:32 am »
Vertical Gamma Shift & Viewing Angles

DSC_0329 by Dr NCX, on Flickr

Correct Way to View TN Panels

Correct Way To View TN LCD Panels by Dr NCX, on Flickr

TN panels suffer from vertical gamma shift: their colors and shades are uneven from top (top quarter is too dark) to bottom (bottom half is washed out), as well tend to have more banding, and always have vastly less wide, or more restrictive viewing angles than other panel types.  VA panels suffer from horizontal gamma shift which causes the sides of VA panel to be significantly lighter or washed out compared to AHVA, IPS and PLS panels. VA panel gamma becomes lower, and colors and shades become more washed out the further away from the center.  AHVA, IPS and PLS panels do not suffer from gamma shift at all, and thus are able to display colors and shades evenly across the panel. 

The BenQ Zowie RL2460 and ViewSonic VX2458-mhd both use AUO TN panels with vertical shift, but the ViewSonic suffers from less gamma shift in the bottom half of the panel, however it does appear to suffer from a bit of horizontal shift as well and have a dark wide hour glass shape spanning across most of the panel, though the grey bar panels still appear more even over all compared to the BenQ which has a significantly more washed out bottom half than the VX2458-mhd.  The ViewSonic VX2458-mhd offers atypical and exemplary homogeneity for a TN panel, however it still suffers from obvious gamma shift and looks washed out compared to good AHVA/IPS/PLS and VA panels.

AOC AG271QG AUO AHVA Panel
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BenQ Zowie RL2460 AUO TN Panel
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Samsung 43NU7100 Samsung VA Panel
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ViewSonic VX2458-mhd AUO TN Panel
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The AUO TN panel in the VX2458-mhd has normal, or very restrictive and limited viewing angles for a TN panel.

Asus VG279Q: 144hz AUO AHVA Panel
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The AHVA panel using 144hz 1080p Asus VG279Q is the best 144hz 1080p monitor.  Viewing angle photo compilation is from the Review by PRAD.


Samsung C24FG70: 144hz Samsung VA Panel
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The VA panel using 144hz 1080p Samsung C24FG70 uses the same panel as the C24FG73 which has better overdrive with less overshoot ghosting, but the same image quality.  Viewing angle photo compilation is from the Review by PRAD.


ViewSonic VX2458-mhd: 144hz AUO TN Panel:
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The TN panel using ViewSonic VX2458-mhd is one of the best tested 144hz 1080p AUO TN panels.  Best Reviewed Flicker Free 1080p 144hz Monitors with performance summaries and dozens of review links.  Viewing angle photo compilation is from the Review by PRAD
« Last Edit: May 18, 2019, 01:28:24 am by NCX »