{"id":18817,"date":"2022-10-20T13:44:32","date_gmt":"2022-10-20T11:44:32","guid":{"rendered":"https:\/\/www.souteze.cz\/magazin\/?p=18817"},"modified":"2022-10-20T13:45:55","modified_gmt":"2022-10-20T11:45:55","slug":"jak-profesionalne-natocit-video-pomoci-smartphonu","status":"publish","type":"post","link":"https:\/\/www.souteze.cz\/magazin\/jak-profesionalne-natocit-video-pomoci-smartphonu\/","title":{"rendered":"Jak profesion\u00e1ln\u011b nato\u010dit video pomoc\u00ed smartphonu"},"content":{"rendered":"\n

Nat\u00e1\u010den\u00ed je velk\u00e1 v\u00fdzva. M\u011blo by se p\u0159idat nat\u00e1\u010den\u00ed na dostate\u010dn\u011b vysok\u00e9 \u00farovni, proto\u017ee ka\u017ed\u00fd si m\u016f\u017ee zapnout re\u017eim nahr\u00e1v\u00e1n\u00ed videa a dr\u017eet smartphone p\u0159ed sebou.<\/strong><\/p>\n\n\n\n

U\u017e jen poskl\u00e1dat oby\u010dejnou fotku tak, aby byla zaj\u00edmav\u00e1, je u\u017e t\u011b\u017ek\u00fd \u00fakol. V re\u017eimu nat\u00e1\u010den\u00ed je \u0159ada probl\u00e9m\u016f, se kter\u00fdmi se v re\u017eimu fotografie nedo\u010dk\u00e1me \u2013 zm\u011bna r\u00e1mu, pohyb kamery, ne\u017e\u00e1douc\u00ed vibrace, kontrola nad zaost\u0159ov\u00e1n\u00edm, kter\u00e1 je vid\u011bt na v\u00fdsledn\u00e9m z\u00e1znamu… Je toho hodn\u011b toho. Na\u0161t\u011bst\u00ed n\u00e1m technika vych\u00e1z\u00ed vst\u0159\u00edc a aktu\u00e1ln\u00ed vrchol technologick\u00fdch v\u00fddobytk\u016f v t\u00e9to v\u011bci mezi smartphony najdeme v Honor Magic4 Pro<\/span><\/strong><\/a>. Zde je n\u00e1vod, jak m\u016f\u017eete vyu\u017e\u00edt siln\u00e9 str\u00e1nky tohoto smartphonu ve sv\u016fj prosp\u011bch.<\/p>\n\n\n\n

Obrovskou v\u00fdhodou je rychl\u00e9 a bezchybn\u00e9 automatick\u00e9 ost\u0159en\u00ed. Pou\u017eij to<\/h2>\n\n\n\n

Autofokus p\u0159i nat\u00e1\u010den\u00ed je zvl\u00e1\u0161t\u011b d\u016fle\u017eit\u00fd, proto\u017ee obraz je viditeln\u00fd nejen po zaost\u0159en\u00ed, ale i p\u0159i jeho nastaven\u00ed. Nastavit zaost\u0159en\u00ed tak, aby to ve filmu vypadalo dob\u0159e, je docela probl\u00e9m. V p\u0159\u00edpad\u011b drtiv\u00e9 v\u011bt\u0161iny chytr\u00fdch telefon\u016f je vid\u011bt efekt plav\u00e1n\u00ed ost\u0159en\u00ed, proto\u017ee takto funguje autofokus na z\u00e1klad\u011b detekce kontrastu \u2013 upravuje ost\u0159en\u00ed r\u016fzn\u00fdmi sm\u011bry metodou pokus omyl, dokud nedos\u00e1hne nejvy\u0161\u0161\u00ed kontrast na okraji objekt\u016f. D\u00edky tomu je p\u0159i focen\u00ed chytr\u00fdm telefonem vid\u011bt, jak se fotoapar\u00e1t sna\u017e\u00ed hledat zaost\u0159en\u00ed, i kdy\u017e se v z\u00e1b\u011bru neobjevil \u017e\u00e1dn\u00fd nov\u00fd objekt, kter\u00fd by ost\u0159en\u00ed ovlivnil. Evidentn\u011b to kaz\u00ed v\u00fdsledn\u00fd efekt nahr\u00e1vky a je spojeno s amat\u00e9rstv\u00edm.<\/p>\n\n\n\n

V posledn\u00ed dob\u011b se na trhu \u2013 stejn\u011b jako u zrcadlovek \u2013 objevily smartphony s f\u00e1zovou detekc\u00ed autofokusu, kter\u00e9 provede jedno m\u011b\u0159en\u00ed a hned v\u00ed, jak moc mus\u00ed zaost\u0159it. To je velk\u00fd pokrok, ale mnohem v\u00edce z\u00e1le\u017e\u00ed na tom, kolik t\u011bchto senzor\u016f pro detekci f\u00e1ze je, jak jsou uspo\u0159\u00e1d\u00e1ny a podobn\u011b. V\u00fdsledkem tohoto \u0159e\u0161en\u00ed je velmi velk\u00fd po\u010det m\u011b\u0159ic\u00edch bod\u016f – tak velk\u00fdch, jak to velikost matice umo\u017e\u0148uje – a p\u0159esn\u011b pokr\u00fdvaj\u00edc\u00edch cel\u00fd r\u00e1m. Efekt je pro div\u00e1ka v\u00edce ne\u017e z\u0159ejm\u00fd \u2013 nejen \u017ee je ost\u0159en\u00ed bez plav\u00e1n\u00ed, je velmi rychl\u00e9 a prakticky spr\u00e1vn\u00e9. Takovou kvalitu ost\u0159en\u00ed neposkytuj\u00ed fotoapar\u00e1ty s n\u00edzkou,<\/p>\n\n\n\n

Druhou v\u00fdhodou je plynul\u00e9 ost\u0159en\u00ed p\u0159i zm\u011bn\u011b r\u00e1me\u010dku. M\u016f\u017eete p\u0159ej\u00edt od fotografov\u00e1n\u00ed objektu velmi bl\u00edzko k pohledu do d\u00e1lky a\u017e k horizontu a zp\u011bt bez znateln\u00fdch rozost\u0159en\u00ed, ani\u017e by se ztratilo automatick\u00e9 zaost\u0159ov\u00e1n\u00ed. O to d\u016fle\u017eit\u011bj\u0161\u00ed je, \u017ee ty nejjednodu\u0161\u0161\u00ed statick\u00e9 r\u00e1me\u010dky b\u00fdvaj\u00ed nudn\u00e9, pokud nezakr\u00fdvaj\u00ed v\u00fdjime\u010dn\u011b \u00fachvatn\u00fd v\u00fdhled. Dynamick\u00e9 sn\u00edmky, na druhou stranu, kdy\u017e se kamera, nebo v na\u0161em p\u0159\u00edpad\u011b smartphone, posune, p\u0159ech\u00e1z\u00ed od detailu k obecn\u00e9mu nebo naopak, dod\u00e1vaj\u00ed filmu charakter a d\u011blaj\u00ed ho mnohem zaj\u00edmav\u011bj\u0161\u00edm. V p\u0159\u00edpad\u011b Honor Magic4 Pro m\u016f\u017eete takov\u00e9 z\u00e1b\u011bry po\u0159izovat bez obav, \u017ee budou nepoveden\u00e9.<\/p>\n\n\n\n

Dal\u0161\u00ed technikou je pou\u017eit\u00ed statick\u00e9ho r\u00e1me\u010dku a zm\u011bna zaost\u0159ovac\u00edho bodu tak, \u017ee na n\u011bj uk\u00e1\u017eete prstem na obrazovce. Dotykov\u00fd displej takov\u00fd postup velmi usnad\u0148uje a my si m\u016f\u017eeme b\u00fdt jisti, \u017ee se Honor Magic4 Pro p\u0159i takov\u00e9 operaci neztrat\u00ed. V\u00fdsledkem m\u016f\u017ee b\u00fdt zaj\u00edmav\u00fd z\u00e1b\u011br, nap\u0159. detailn\u00ed z\u00e1b\u011br kv\u011btiny, tak\u017ee se po chv\u00edli z bokehu objev\u00ed louka, kter\u00e1 byla d\u0159\u00edve rozmazan\u00fdm pozad\u00edm. Mo\u017enost\u00ed, jak vyu\u017e\u00edt zm\u011bnu ost\u0159\u00edc\u00edho bodu, je mnoho a podm\u00ednka je pouze jedna \u2013 prvn\u00ed sn\u00edman\u00fd objekt mus\u00ed b\u00fdt velmi bl\u00edzko objektivu a druh\u00fd mnohem d\u00e1le.<\/p>\n\n\n\n

Cel\u00e1 \u0159ada re\u017eim\u016f nahr\u00e1v\u00e1n\u00ed podle va\u0161ich pot\u0159eb<\/h2>\n\n\n\n

Dne\u0161n\u00ed smartphony nab\u00edzej\u00ed r\u016fzn\u00e9 re\u017eimy nahr\u00e1v\u00e1n\u00ed videa, kter\u00e9 se vyplat\u00ed pou\u017e\u00edvat spr\u00e1vn\u00fdm zp\u016fsobem. Zde jsou nejobl\u00edben\u011bj\u0161\u00ed:<\/p>\n\n\n\n

  1. VGA – nejni\u017e\u0161\u00ed rozli\u0161en\u00ed, dnes prakticky nepou\u017eiteln\u00e9, pokud nepl\u00e1nujeme p\u0159ilo\u017eit video soubor k e-mailu nebo MMS, kde je velikost souboru z\u00e1sadn\u00ed. V pam\u011bti telefonu zab\u00edr\u00e1 nejm\u00e9n\u011b m\u00edsta<\/li>
  2. HD – nejlep\u0161\u00ed kompromis mezi d\u00e9lkou z\u00e1znamu, tedy velikost\u00ed souboru, a kvalitou. U\u017eite\u010dn\u00e9, kdy\u017e pl\u00e1nujete nahr\u00e1vat dlouh\u00e9 sekvence a nechcete, aby nahr\u00e1vky zab\u00edraly des\u00edtky gigabajt\u016f<\/li>
  3. 1:1 – \u010dtvercov\u00e1 nahr\u00e1vka s rozli\u0161en\u00edm 1440 x 1440. U\u017eite\u010dn\u00e9 zejm\u00e9na pro soci\u00e1ln\u00ed s\u00edt\u011b, kter\u00e9 podporuj\u00ed pom\u011br stran 1:1 a pro speci\u00e1ln\u00ed um\u011bleck\u00e9 \u00fa\u010dely<\/li>
  4. FHD \u2013 dnes nejb\u011b\u017en\u011bj\u0161\u00ed standardn\u00ed a v\u00fdchoz\u00ed filmov\u00fd re\u017eim, zn\u00e1m\u00fd jako 1080p. <\/li><\/ol>\n\n
    <\/div>","protected":false},"excerpt":{"rendered":"

    Nat\u00e1\u010den\u00ed je velk\u00e1 v\u00fdzva. M\u011blo by se p\u0159idat nat\u00e1\u010den\u00ed na dostate\u010dn\u011b vysok\u00e9 \u00farovni, proto\u017ee ka\u017ed\u00fd si m\u016f\u017ee zapnout re\u017eim nahr\u00e1v\u00e1n\u00ed videa a dr\u017eet smartphone p\u0159ed sebou.<\/p>\n","protected":false},"author":10,"featured_media":18821,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1179],"tags":[1209],"acf":[],"_links":{"self":[{"href":"https:\/\/www.souteze.cz\/magazin\/wp-json\/wp\/v2\/posts\/18817"}],"collection":[{"href":"https:\/\/www.souteze.cz\/magazin\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.souteze.cz\/magazin\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.souteze.cz\/magazin\/wp-json\/wp\/v2\/users\/10"}],"replies":[{"embeddable":true,"href":"https:\/\/www.souteze.cz\/magazin\/wp-json\/wp\/v2\/comments?post=18817"}],"version-history":[{"count":2,"href":"https:\/\/www.souteze.cz\/magazin\/wp-json\/wp\/v2\/posts\/18817\/revisions"}],"predecessor-version":[{"id":18822,"href":"https:\/\/www.souteze.cz\/magazin\/wp-json\/wp\/v2\/posts\/18817\/revisions\/18822"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.souteze.cz\/magazin\/wp-json\/wp\/v2\/media\/18821"}],"wp:attachment":[{"href":"https:\/\/www.souteze.cz\/magazin\/wp-json\/wp\/v2\/media?parent=18817"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.souteze.cz\/magazin\/wp-json\/wp\/v2\/categories?post=18817"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.souteze.cz\/magazin\/wp-json\/wp\/v2\/tags?post=18817"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}