Samsung 24 Inch LCD Showdown - 245T vs. 245B - Testing - Page 2 - Lighting Uniformity

Article Index
Samsung 24 Inch LCD Showdown - 245T vs. 245B
First Impressions - Page 2
Samsung SyncMaster 245T Specifications
Samsung SyncMaster 245B Specifications
Testing - Page 1 - Color Accuracy
Testing - Page 2 - Lighting Uniformity
Testing - Page 3 - General Testing
Samsung 245T vs 245B Showdown - Final Thoughts

 

Lighting Uniformity and Backlight Bleeding Testing:

For our second set of testing, we will be using a luminance meter to see how evenly the backlight and lighting of each monitor is, I have compared each monitor to each other to show the differences between the two LCD panels. All the luminance testing was taken with the Contrast set at 50, and the Brightness set at 50 on both monitors.

We use our luminance meter in a dark environment to measure both brightness uniformity as well as backlight bleeding.  To measure brightness, we use a bright white screen and measure across the screen in a grid to get our readings.  The brightest spot is considered to be 100% and the blackest point (with a black screen) is considered to be reference 0%.  The other values are obtained by calculating the difference between the two.  The screen is brightest near the center.

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Samsung SyncMaster 245T - Lighting Uniformity

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Samsung SyncMaster 245B - Lighting Uniformity

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Samsung SyncMaster 245T - Lighting Uniformity

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Samsung SyncMaster 245B - Lighting Uniformity

 

Now we will move onto the backlight testing, the next charts will show the backlight bleeding.


Blacklight bleeding is measured much the same way but exactly the opposite of the brightness uniformity.  On a black screen the brightest point is considered to be 0% and the darkest point is considered to be 100%.  The results shown below are the difference between the two.  The results look exaggerated but are represented proportionally.  The screen "bleeds" more toward the center.

 

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Samsung SyncMaster 245T - Backlight Bleeding

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Samsung SyncMaster 245B - Backlight Bleeding

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Samsung SyncMaster 245T - Backlight Bleeding

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Samsung SyncMaster 245B - Backlight Bleeding

 

As we can see in the charts above, the 245T was quite a bit more uniform in its lighting and in the backlight bleeding, the edges were a bit darker than the middle, but otherwise it was pretty good compared to the 245B. The 245B had a bit more range of brightness, but overall wasn't terrible, but when compared to the 245T, you can easily tell that 245B was the lower-end panel.

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Samsung SyncMaster 245T (Left) - Samsung SyncMaster 245B (Right)