Author Topic: Samsung 43NU7100 & Sony 43X750F Review x2: Semi-Glossy 4K VA & IPS  (Read 2583 times)


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« Reply #15 on: November 30, 2018, 06:43:47 pm »
Calibrated Image Quality

Samsung 43UN7100 vs Sony 43X750F CC by Deepinthesky Teslastorm, on Flickr

The sRGB color space coverage measurements come from dispcalgui's software calibration ICC profile verification which slightly decreased the Sony's accuracy versus my menu calibrations, so I did not use dispcalgui to calibrate the Samsung, especially since the process takes around two hours.  Instead I included the HCFR HDTV/REC 709 CIE Diagram which shows the displays coverage of the the HDTV/REC 709 color space, which is very similar to the sRGB color space:

Color Gamut Coverage Comparison
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Neither display can fully cover the HDTV/REC 709 or sRGB color space, and both suffer from over-saturation, however, the Sony's flaws are more severe since it is one of the most expensive 43" 4K display on the market.  The Sony is more accurate and vibrant since it doesn't dim during dark scenes, and has more accurate and linear gamma than the Samsung which uses a VA panel with horizontal gamma shift and black crush.  The Samsung has less accurate, vibrant and even color and shades, but it also has four times lower contrast or higher black depth, and significantly more glow when displaying black which ruined dark content viewing.  As shown below, the displays look very similar after calibration when comparing photos not meant to highlight VA gamma shift and black depth/contrast differences:

Samsung 43NU7100: Family Photo
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Sony 43X750F: Family Photo
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Samsung 43NU7100: Ascendant Realm
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Sony 43X750F: Ascendant Realm
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AOC AG271QG (AHVA) Gamma Shift
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Samsung 43NU7100 (A-MVA) Gamma Shift
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Notice how much darker the center of the VA panel is compared to the AHVA panel, and how much lighter the sides are. VA panels appear to have a dark iris in the center, which fades when viewed off angle horizontally, which also can result in detail which was obscured from viewed from head on becoming visible.
« Last Edit: February 28, 2019, 02:16:32 am by NCX »