Sto je snimak manje napadan, tamniji i losijeg kvaliteta (pa cak i fullHD) TV se teze bori.
With LED LCD screens, control over the level of brightness across the display is limited. Take an LCD display into a darkened room and you’ll notice that parts of a purely black image aren’t actually black, because you can still see the backlighting (or edge lighting) showing through.
Being able to see unwanted backlighting affects a TV’s contrast, which is the difference between its brightest highlights and its darkest shadows. You’ll often see a contrast ratio quoted, particularly in TVs and monitors. This tells you how much brighter a display’s whites are compared to its blacks. A decent LCD screen might have a contrast ratio of 1,000:1, which means the whites are a thousand times brighter than the blacks.
Contrast on an OLED display is way higher. When an OLED screen goes black, its pixels actually produce no light whatsoever. You can’t get darker than that. That means you get an infinite contrast ratio, although how great it looks will depend on how bright the LEDs can go when they’re lit up.
To compensate, many LED LCD TVs offer a “dynamic” contrast mode, which has the TV altering the backlight level according to the image on screen. It’s not the best solution for movies, because there the variance in screen brightness is much less predictable.
The best LED LCD TVs are called direct LED displays. Here, the LEDs sit right behind the LCD panel rather than to the side of it, giving a screen greater control over how bright certain areas of a screen are. You’ll find this tech in some higher-end TVs. However, its effectiveness varies.
Unlike OLED, Direct LED-lit TVs still don’t have pixel-level control over light levels. Instead, a display has ‘zones’ or groups of LEDs than can be dimmed. It can be extremely useful for doing things like blacking-out the bars you see when watching a 21:9 cinema aspect movie on a 16:9 TV, but generally isn’t as good at dealing with more complicated tasks.
For example, looking at a brightly-lit face on top of a completely black background, you might see a halo of light around parts of the face because the backlight zones didn’t quite match up with what’s on screen.
Of course, TV makers are getting better at this every year. Panasonic’s DX900 series TV uses a ‘honeycomb’ backlight structure, which divides the LED backlights into hundreds of individually controllable zones, with rigid dividing structures limiting light leakage and helping to reduce ‘halo’ effects.
Kod mene na C7 nema tog problema, citao sam i ja o tome na avs-u. I gledao sam iste serije na Netflix-u na kojima se njima javljao problem.Mislim da ima male šanse za pojavljivanje IR na 2017 modelima jer ima preventivnih zaštita protiv toga. Recimo kada detektuje statičnu sliku prebaci na screen saver posle par minuta.Jel moze neko da napiše iz prve ruke kakav je unifrmity na tamno sivoj na LG OLED iz 2017. Video sam neke bas loše na avsforumu. I da li ima problema sa image retention-om?
Uzeću B7 ali mislim da su svi oled paneli ove godine isti.
Moj primerak ima odlican grey uniformity, bas malopre sam probao 5% i 20% slajdove i ni traga od banding-a. Mislim da je problem sto ljudi kupe TV i odmah testiraju banding, a kod LED treba da prodje 100-200 sati da se ekran formira do kraja. Image retention - nikad nisam primetio. Image burn - ne znam, ja ga nemam ali ako dugo drzis staticnu sliku, ko zna... Vidjao sam plazme ali i LCD-ove, narocito iz kladionica, koji imaju takav burn in da se vidi i kad je TV ugasen.Jel moze neko da napiše iz prve ruke kakav je unifrmity na tamno sivoj na LG OLED iz 2017. Video sam neke bas loše na avsforumu. I da li ima problema sa image retention-om?
Da li 43XE8005 ima HDR 10 panel? Da li je ok kupovina za 600e?
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