"dynamic" contrast ratio?
i've seen lots of 15.000:1 and 10.000:1
what "dynamic" contrast ratio..should i look for the complex the better?
and some tv's i seen have 120Hz? what is that?
thanks for the give support to.
Answers: Yes, for dynamic CR, the higher the better.
Dynamic CR = 4 to 5 times true contrast, so 10,000:1 is in reality about 2,000:1 - still pretty apt, but there is closely of marketing hype in CR numbers.
120 Hz channel the TV picture is refreshed twice as hurriedly. helps near motion scenes. I would avoid it for immediately. Technology is still under nouns and very buggy...
In abundant TVs, the backlight level is reduced when the peak goes foggy all over, so that the picture looks blacker. But when the picture have both light and depressing parts, that doesn't work. The dynamic contrast ratio is the ratio of light to unlit in one picture lacking any change surrounded by back neutral. The static contrast ratio is the ratio between a full white screen and a full black blind with backlight vacillation included (note: this is a simplified explanation, and is not exactly correct for may sets, since even dynamic contrast is often measured next to full-screen values, except the backlight effect is not included). Some people quality that the "static" contrast ratio is deceptive, since it doesn't really imitate the contrast available in a picture. However, it does really increase the appearance of images will significant dark areas and fadeouts.
120Hz frame rate have been introduced to smooth out the motion of nifty moving objects, and to reduce the "trails" aft these objects often see in elder LCD displays. Most newer sets have it, and from what I hold seen it is completely effective. Essentially, an "extra" frame is inserted between respectively 60Hz frame, and the image within this extra frame is "interpolated" so that objects are placed between their positions on the preceding and succeeding frames.
If I were to buy an LCD TV today, I would never consider one short 120Hz frame rate, 10,000:1-15,000:1 or more "static" contrast ratio (CR), >3000:1 dynamic CR, plus the ability to adopt and properly display 1080p 24Hz frame rate (at 72Hz or120Hz).
The new Sony Bravia XBR4 and XBR5 sets enjoy these capabilities.
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