Monitor :: AOC LM800 18.1-inch TFT LCD Monitor :: www.hardwarezone.com.au Reviews ::

DisplayMate Results

Circular Geometry, Cross Hatch and Dot	In the Circular Geometry, Cross Hatch and Dot test, we can see that the circles are flattened along the X-Axis (prolate). This is indicative of some minor problems with the aspect ratio. The crosshatches are in most cases perfectly displayed in that there are no obvious distortions in the lines and dots. However, we can see bright fringes for particular color schemes like "Blue on Red" and dark fringes for "Green on Magenta". This is indicative of either color misregistration or misconvergence. However, it is not as severe as it sounds, because other LCD panels have exhibited similar characteristics.
Stuck Pixel	In the Stuck Pixel test, we are able to discover one dead pixel. This is still considered good bearing in mind that we have seen worst from other LCD panels. This is a positive reflection on TPV whose factories are ISO9001 and ISO 14001 accredited for quality and environment.
Screen Uniformity	In the Screen Uniformity test, we discovered a dim portion around the periphery of the screen, for the background of all the colors in the test. This is especially so for colors like white and cyan where the problem persists in all variations of this test. This is less so for colors like green, red, magenta and yellow. This is due to the difficulty in backlighting the panel uniformly over the entire screen (resulting in hot and cold spots that are brighter or dimmer than average).
Pixel Tracking and Timing Lock / Interlace Flicker	In the Pixel Tracking and Timing Lock and Interlace Flicker tests, we discovered a barely discernible flicker on the screen, which failed to be corrected by the monitor’s auto-calibration. They are essentially beat patterns that periodically modulate the intensity of the dithers or interlaced lines. This might have been caused by electronic interference from nearby devices or timing issues due to the use of the RGB analog input.
Video Bandwidth Index	We are pleasantly surprised when we got a perfect score of 100 for the Video Bandwidth Index. This indicates that high and low frequencies, corresponding to broad and fine detail, are identically reproduced.
Gray-Scale Shifts	In the Gray-Scale Shifts test, the contrast in the shades of color can be clearly seen but in cases where the contrast is only by a difference of one or two, it is harder to make them out. This problem is especially acute for colors like blue, red and magenta. We have seen similar results from other LCD panels so this is probably due to an inherent weakness in LCD technology.
Gray-Scale Selectivity	In the Gray-Scale Selectivity test, we noticed a general trend where the first 2 blocks (block 108, 110) and the last 2 blocks from the lowest gray index to the highest gray index are either too bright or indistinguishable from one another. We see this across all the colors of the test. This is not surprising as LCD panels may produce pleasing images but inaccurate in gray-scale rendering.
White Level Saturation	In the White-Level Saturation test, we see a gradual shift in blocks from the darkest to the lightest for all the colors of the test except for some anomalies. Firstly, some of the blocks with an index of 233, 240 and 244 are too bright when it should have been darker. Some of the blocks are indistinguishable from one another (block index 227, 229, 231, 233, for example). This shows one of the disadvantages of LCD technology (the bright-end of the LCD intensity scale is easily overloaded, which leads to saturation and compression).
Color Tracking	Generally, the AOC LM800 displays satisfactory performance in the Color Tracking test, save for some anomalies. This includes a yellowish tint to the brightest red / white (magenta looks a little too bright) and certain color blocks are indistinguishable from one another (blocks 36, 40, 44, 48 and 52).
64/256 Intensity Color Level Ramp and 256 Intensity Level Ramp / 64/128 Steps Gray Scale	In the 64/256 Intensity Color Level Ramp and 256 Intensity Level Ramp tests, we can see a consistent trend where the dimmest and brightest end of the gray scale shades are compressed. In the 64/128 Step Gray Scale test, we realized that there is significant banding for the colors of white, green and magenta. This is an inherent weakness of LCD panels so the AOC LM800 cannot be faulted here.
Reverse Video Check	In the Reverse Video Contrast check, we can see that black texts look sharp except for some anomalies. We can see bright ridges for red and magenta and dark ridges for cyan and green texts in the Black on Gray box. We also noticed that the following color texts are not clear: yellow and dark yellow. This is consistent with what we have discovered from other LCD panel. Thus, the AOC LM800 is performing up to expectations here.
Color Combinations	In the Color Combinations test, we can see bright ridges for magenta, red and yellow color combos and blue on green texts. Dark ridges can be found on green color combos and cyan on magenta texts. Finally, cyan / green and white / yellow color combos texts are not clear. However, comparatively speaking the LM800 actually performs better than some panels.
Scaled Font	The AOC LM800 performs up to expectations in the Scaled Font test. The smallest font that can be discerned is of size 9 pixels and 6.8 points for both Arial and Times New Roman fonts at a resolution of 1280 x 1024.
Color Saturation / High Contrast Streaking / Streaking and Ghosting / Color Streaking / Screen Regulation / Moiré Montage	The AOC LM800, like other good quality LCD panels performs well in the following tests: Color Saturation, High Contrast Streaking, Streaking and Ghosting, Color Streaking, Screen Regulation and finally Moiré Montage tests. This shows that the monitor should perform relatively well in games or video materials, where there is a rapid sequence of image changes. Additionally, the LCD should have no problem displaying bars, charts and titles, commonly found in office documents.