Albatron L17AT 17'': Putting the TV in LCD
by Kristopher Kubicki on October 21, 2002 11:18 AM EST- Posted in
- Displays
Benchmark
For comparison purposes, we ran a combination of CheckScreen and DisplayMate on the Albatron L17AT 17” LCD against the previously reviewed Samsung 191T LCD. Below is a table with the tests performed and notes we made during testing. Our test machine is composed of an Inno3D GeForce4 4200 using the VGA 15 Pin D-sub, remember there is no DVI on this model. Albatron’s L17ATD does have DVI in. We ran all of the tests at 1280x1024 pixels with a refresh rate of 60Hz. Before the final benchmark, we calibrated the monitor as per the instructions included with DisplayMate; any changes to the LCD during the initial calibration run are noted in the observations.
| DisplayMate/CheckScreen |
||
| Test |
Monitor |
Observations |
| Intensity range check |
L17AT |
Colors too bright, corrected from OSD |
| 191T |
Looks good |
|
| Black level adjustment |
L17AT |
Scale turns to black too fast, corrected with OSD |
| 191T |
Blacks appear slightly lighter than on CRT |
|
| Defocusing, blooming and halos check |
L17AT |
None |
| 191T |
None |
|
| Screen uniformity and color purity |
L17AT |
Slightly darker on top and bottom, slightly lighter on left and right |
| 191T |
Sharp, crisp, pure |
|
| Dark screen (Glare Test) |
L17AT |
No glare, no reflection |
| 191T |
Very little glare. Anti-reflective screen |
|
| Primary colors |
L17AT |
Good |
| 191T |
Looks good |
|
| Color Scales |
L17AT |
Problems with Darks on the sides of the screen |
| 191T |
Reds got dark a little too fast |
|
| 16 intensity levels |
L17AT |
Looks good |
| 191T |
Looks good |
|
| Pincushion/barrel distortion |
L17AT |
Completely straight |
| 191T |
Completely straight, no distortion |
|
| Geometric Linearity |
L17AT |
No curvature |
| 191T |
Razor sharp grid, no curvature |
|
| Focus check |
L17AT |
Uniform perfect focus |
| 191T |
Uniform clean focus |
|
| Horizontal color registration |
L17AT |
Barely off, expected because of LCD |
| 191T |
Slightly off on each color, expected due to RGB sub pixels |
|
| Vertical color registration |
L17AT |
Perfect |
| 191T |
Completely level |
|
| Fine line moiré pattern |
L17AT |
No Moiré, but horizontal streaking instead |
| 191T |
Vertical Moiré, corrected slightly by controls |
|
| Screen regulation |
L17AT |
None |
| 191T |
No problems |
|
| Streaking and ghosting |
L17AT |
Extreme streaking. NO DVI |
| 191T |
Moderate streaking |
|
Right off the bat we expected mid range streaking. The importance of DVI becomes incredibly apparent when we ran our custom benchmark suite against the L17AT. While this is discouraging, the real disappointment was in the edges of the screen. During our tests, the bottom few millimeters were slightly darker than the rest of the screen. Furthermore, the left and right sides of the LCD were incredibly bright as well. Most likely, this is due to feedback on the analog 15 pin D-sub connection. Graphic designers may want to stay away from this LCD.
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zeroidea - Monday, March 8, 2004 - link