Sanibonani nonke.
Ngagqugquzelwa ukuthi ngibhale lesi sihloko esifushane ngengxabano mayelana nokukhethwa kwe-TV.
Manje kule ndawo - kanye "nama-megapixel amakhamera" - kukhona i-bacchanalia yokumaketha ekuphishekeleni izinqumo: I-HD Ready sekuyisikhathi eside ithathelwa indawo yi-Full HD, futhi i-4K kanye ne-8K kakade iya ngokuya iduma.
Ake sikuhlole - yini esiyidingayo ngempela?
Isifundo sejiyomethri yesikole kanye nolwazi oluthile oluyisisekelo oluvela ku-Wikipedia luzosisiza kulokhu.
Ngakho-ke ngokusho , iso lenyama lomuntu ovamile liyidivayisi eyingqayizivele ekwazi ukubuka ngesikhathi esisodwa isikhala nge-engeli engu-130Β°-160Β°, kanye nezinto ezihlukanisayo nge-engeli engu-1-2β² (cishe 0,02Β°-0,03Β°) . Lapho Ukugxila okusheshayo kwenzeka ebangeni lika-10 cm (abantu abasha) - 50 cm (abantu abaningi abaneminyaka engu-50 nangaphezulu) kuya kokungapheli.
Kubukeka kupholile. Eqinisweni, akulula kangako.
Ngezansi inkambu yokubuka iso lomuntu lokunene (ikhadi le-perimetric, izinombolo esikalini zingamadigri angular).
Indawo ewolintshi iyindawo yokuqagela ye-fundus blind spot. Insimu yombono weso ayinakho ukuma kombuthano ojwayelekile, ngenxa yomkhawulo wokubheka ngekhala ohlangothini oluphakathi kanye namajwabu amehlo ngaphezulu nangaphansi.
Uma siphakamisa isithombe samehlo angakwesokudla nakwesokunxele, sithola into enjengale:
Ngeshwa, iso lomuntu alinikezi ikhwalithi efanayo yombono kuyo yonke indiza endaweni ebanzi. Yebo, ngamehlo amabili singakwazi ukubona izinto ezingaphakathi kwe-180 Β° phambi kwethu, kodwa singakwazi ukuzibona njenge-dimensional emithathu kuphela phakathi kuka-110 Β° (kuya endaweni eluhlaza), futhi njengemibala egcwele - ngokulingana. ububanzi obuncane obungaba ngu-60Β°-70Β° (kuya endaweni eluhlaza okwesibhakabhaka). Yebo, ezinye izinyoni zinombono ocishe ube ngu-360Β°, kodwa sinakho esinakho.
Ngakho siyakuthola lokho umuntu uthola isithombe sekhwalithi ephezulu nge-engeli yokubuka engaba ngu-60Β°-70Β°. Uma kudingeka ukumbozwa okukhulu, siyaphoqeleka ukuthi "sigijimise" amehlo ethu esithombeni.
Manje - mayelana nama-TV. Ngokuzenzakalelayo, cabangela ama-TV anesilinganiso esidume kakhulu sobubanzi nobude njengo-16:9, kanye nesikrini esiyisicaba.
Okusho ukuthi, kuvela ukuthi i-W: L = 16:9, futhi i-D iyi-diagonal yesikrini.
Ngakho-ke, ukukhumbula uMthetho wePythagorean:
Ngakho-ke, sicabanga ukuthi isixazululo sithi:
- I-HD Ready 1280x720 pixels
- I-HD egcwele inamaphikseli angu-1920x1080
- I-Ultra HD 4K inamaphikseli angu-3840x2160,
sithola ukuthi uhlangothi lwe-pixel luthi:
- I-HD Ready: D/720,88
- I-HD Egcwele: D/2202,91
- I-Ultra HD 4K: D/4405,81
Ukubalwa kwalawa manani kungatholakala lapha
Manje ake sibale ibanga elifanele lesikrini ukuze iso limboze sonke isithombe.
Kusukela esithombeni kuyacaca ukuthi
Njengoba ipharamitha enkulu kunazo zonke yobude nobubanzi besithombe ububanzi - futhi iso lidinga ukumboza bonke ububanzi besikrini - ake sibale ibanga elifanele lesikrini, sicabangela ukuthi, njengoba kukhonjisiwe ngenhla, i-engeli yokubuka. akufanele idlule ama-70 degrees:
Leyo: Ukuze iso likwazi ukumboza bonke ububanzi besikrini, kufanele sibe kude kungabi ngaphezu kwengxenye ye-diagonal yesikrini.. Ngaphezu kwalokho, leli banga kufanele okungenani libe ngu-50 cm ukuze kuqinisekiswe ukugxila okukhululekile kubantu banoma iyiphi iminyaka. Asikhumbule lokhu.
Manje ake sibale ibanga umuntu azohlukanisa ngalo amaphikseli esikrinini. Lona ngunxantathu ofanayo one-tangent ye-engeli, u-R kuphela kuleli cala ongusayizi wephikseli:
Okusho ukuthi: ebangeni elikhulu kunosayizi wamaphikiseli angu-2873,6, iso ngeke libone okusanhlamvu. Lokhu kusho ukuthi, uma kucatshangelwa ukubalwa kohlangothi lwephikseli ngenhla, udinga ukuba kuleli banga elincane elilandelayo ukusuka esikrinini ukuze isithombe sibe esijwayelekile:
- I-HD Ready: D/720,88 x 2873,6 = 4D, okungukuthi, amadiagonal esikrini amane
- I-HD Egcwele: D/2202,91 x 2873,6 = 1,3D, okungukuthi, cishe okungaphansi kancane kwesikrini esisodwa nesigamu diagonal
- I-Ultra HD 4K: D/4405,81 x 2873,6 = 0,65D, okungukuthi, ngaphezudlwana kwesigamu se-diagonal yesikrini
Futhi manje konke okuholele kukho -
Iziphetho:
- Akufanele uhlale eduze kuka-50 cm esikrinini - iso ngeke likwazi ukugxila esithombeni ngokujwayelekile.
- Akufanele uhlale eduze kwama-diagonal wesikrini angu-0,63 - amehlo akho azokhathala ngoba kuzodingeka agijime azungeze isithombe.
- Uma uhlela ukubuka i-TV ebangeni elikhulu kunezikrini ezine-diagonal, akufanele uthenge okuthile okupholile kune-HD Ready - ngeke uwubone umehluko.
- Uma uhlela ukubukela i-TV ebangeni elikhulu kune-diagonal yesikrini esisodwa nohhafu, akufanele uthenge okuthile okupholile kune-Full HD - ngeke uwubone umehluko.
- Ukusebenzisa i-4K kuhle kuphela uma ubheka isikrini ebangeni elingaphansi kwe-diagonal eyodwa nohhafu, kodwa ngaphezu kwesigamu se-diagonal. Mhlawumbe lezi uhlobo oluthile lwamamonitha emidlalo yekhompyutha noma amaphaneli amakhulu, noma isihlalo esimi eduze ne-TV.
- Ukusebenzisa isixazululo esiphezulu akunangqondo - ngeke uwubone umehluko nge-4K, noma uzobe useduze kakhulu nesikrini futhi i-engeli yokubuka ngeke ihlanganise yonke indiza (bheka iphuzu 2 ngenhla). Inkinga ingaxazululwa kancane ngesikrini esigobile - kodwa izibalo (eziyinkimbinkimbi kakhulu) zibonisa ukuthi le nzuzo iyangabazeka kakhulu.
Manje ngincoma ukulinganisa ikamelo lakho, indawo ye-sofa oyikhonzile, i-diagonal ye-TV nokucabanga: ingabe kunengqondo ukukhokha ngaphezulu?
Source: www.habr.com