Samsung 55in. UN55B8000 LED HDTV - Subjective and Objective Tests

Article Index
Samsung 55in. UN55B8000 LED HDTV
Specifications and First Look
Subjective and Objective Tests
Viewing Angle and Widgets



Testing is always the hardest part about a TV review.  Image quality can be such a subjective experience and I usually like to operate with cold hard facts in hand. Most of these tests are subjective however there are a few quantitative tests mixed in.  Just like with our LCD reviews, we have incorporated a bit of hardware that allows us to test contrast ratio, color accuracy and lighting uniformity.  If you want more details on how we test LCD panels and TV, please check our article here.

Spyder 3

First up we used the Spyder 3 Colorimeter to measure color accuracy when plugged into a PC.  I used this system to play back some Blu-Ray and HD-DVD movies as well as gaming, web-surfing and more.  Initially, the color seemed a little bright and over saturated and the colorimeter tells the story better than I can.




I was very impressed to see that Samsung has left this TV tuned into to it's proper values and it didn't need much color correction at all.  This is actually very unusual for TVs and is a nice thing to know.  What you see is what you should be seeing in terms of color accuracy and vivid picture quality.  It needed very little adjustment to tune it into where it should be.

When it comes to lighting uniformity, we use a luminance meter in a darkened room and take measurements at the LCDs default settings.  Usually brightness is set to 50%, and for contrast ratio tests, we use  the maximum contrast ratio available.  Take a look at how evenly (or unevenly) the backlight is on this TV.

 2D Chart
2D Brightness



3D Chart
3D Brightness


While it may not look like very good lighting uniformity, the reality is that there are a couple of spots that are 15% dimmer than the brightest spot.  This cannot be observed with the naked eye though and that is why we measure with our meter.  We want to see how even it really is.  The 15% variation is perhaps one of the best results we've seen with a large TV and this is actually very good.

When we checked the contrast ratio, we tested several different scenarios such as dynamic contrast, bright backlight, low backlight and settled on a standard "normal" setting on the TV. The Dynamic Contrast ratio was used and tested and the results appeared to be better, but testing becomes sketchier with Dynamic Contrast enabled - at any setting.  The reality is that when you display solid color measuring screens (white & black), the Dynamic Contrast kicks in and tones down the solid colors.  When both are displayed on the screen at the same time, the results are more impressive.  Black levels measured in at 0.54 lux and this is tremendous - even better than the last Plasma TV we looked at recently.