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 PanelBenQ Zowie RL2460 AUO TN PanelSamsung 43NU7100 Samsung VA PanelViewSonic VX2458-mhd AUO TN Panel The AUO TN panel in the VX2458-mhd has normal, or very restrictive and limited viewing angles for a TN panel.
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