Quote:
Originally Posted by florica  Canalul suplimentar de 8 biti trateaza gradul de transparenta a pixelilor , deci influienteza nuanta si in consecinta gradatia culorilor.
Pozele puse de mine sint facute ieri pe o plasma Pana SD alimentata cu semnal direct din cablu Astral pentru TV si din PC folosind conexiunea component.
Imaginea obtinuta din PC cind ruleaza filme in format HD cum sint cele demo din poze, depaseste ca performanta si calitate orice dvd-player home normal , exotisme de citeva mii de euro nu am avut posibilitatea sa testez pentru a compara. |
Da, bine. Uite aici explicatia pentru care 32 de biti inseamna tot 16 milioane de culori:
Color depth - Wikipedia, the free encyclopedia Quote:
Truecolor
Truecolor can frequently mimic many colors found in the real world, producing 16.7 million distinct colors. This approaches the level at which the human eye can distinguish colors for most photographic images, though image manipulation, some black-and-white images (which are restricted to 256 levels with Truecolor) or "pure" generated images may reveal the limitations.
* 24-bit Truecolor uses 8 bits to represent red, 8 bits to represent blue, and 8 bits to represent green. 28 = 256 levels of each of these three colors can therefore be combined to give a total of 16,777,216 mixed colors (256 x 256 x 256). Twenty-four-bit color is referred to as "millions of colors" on Macintosh systems.
32-bit color
"32-bit color" is a misnomer when regarding display color depth. A common misconception is that 32-bit color produces 4,294,967,296 distinct colors.
In reality, 32-bit color actually refers to 24-bit color (Truecolor) with an additional 8 bits either as empty padding space or to represent an alpha channel. Considering red, green, and blue use the same amount of bits for their respective color (with the exception of 16-bit color), the total bits used will be a multiple of 3: like 15-bit color (5 bits each) and 24-bit color (8 bits each). The reason for using empty space is that all but the newest modern computers process data internally in units of 32 bits; as such, using this amount for each pixel can allow optimizations.
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In ceea ce priveste redarea de pe PC, ma indoiesc amarnic ca poate depasi calitativ o solutie dedicata la un pret mai mult decat acceptabil.
PC-ul e un iad din punct de vedere al interferentelor radio si nu are iesiri video de calitate. Pana si faptul ca se citeste/scrie pe hard poate sa induca paraieli si scame in imagine. La un sfert din pretul unui calculator iti iei un DVD-Player Denon, silentios, cu iesire digitala HDMI, cu DAC-uri de ultra-calitate (ce nu le gasesti pe PC), procesare pe 11 biti (ce nu gasesti usor/ieftin pe PC), SACD (nu exista pe PC) etc.
Am vazut ce scoate un PC si am vazut ce scoate un amarat de E-boda. Nu merci, nu-mi mai trbuie PC pentru vazut filme. Cel mult un Media Extender altfel nu.
al_pacino, sa-l stapanesti sanatos.
Calibrarea culorilor e o chestie mai complicata, iti trebuie niste scule in plus. Alte calibrari poti insa sa faci daca iei un DVD de calibrare (AVIA de exemplu).