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.

OSD and Controls Conclusion
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