{"id":24203,"date":"2019-02-18T18:44:17","date_gmt":"2019-02-18T17:44:17","guid":{"rendered":"https:\/\/www.fotolab.cz\/blog\/?p=24203"},"modified":"2024-08-20T08:49:15","modified_gmt":"2024-08-20T06:49:15","slug":"svetelnost-objektivu-proc-je-dulezita","status":"publish","type":"post","link":"https:\/\/www.fotolab.cz\/blog\/svetelnost-objektivu-proc-je-dulezita\/","title":{"rendered":"SV\u011aTELNOST OBJEKTIVU, PRO\u010c JE D\u016eLE\u017dIT\u00c1?"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_69_1 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Obsah<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-69d976057ec69\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-69d976057ec69\"  aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.fotolab.cz\/blog\/svetelnost-objektivu-proc-je-dulezita\/#Svetelnost_objektivu\" title=\"Sv\u011btelnost objektivu\">Sv\u011btelnost objektivu<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.fotolab.cz\/blog\/svetelnost-objektivu-proc-je-dulezita\/#V_jakych_situacich_je_svetelnost_vhodne_resit\" title=\"V jak\u00fdch situac\u00edch je sv\u011btelnost vhodn\u00e9 \u0159e\u0161it\">V jak\u00fdch situac\u00edch je sv\u011btelnost vhodn\u00e9 \u0159e\u0161it<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.fotolab.cz\/blog\/svetelnost-objektivu-proc-je-dulezita\/#Fotografovani_za_horsich_svetelnych_podminek\" title=\"Fotografov\u00e1n\u00ed za hor\u0161\u00edch sv\u011bteln\u00fdch podm\u00ednek\">Fotografov\u00e1n\u00ed za hor\u0161\u00edch sv\u011bteln\u00fdch podm\u00ednek<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.fotolab.cz\/blog\/svetelnost-objektivu-proc-je-dulezita\/#Fotografovani_objektu_v_pohybu\" title=\"Fotografov\u00e1n\u00ed objekt\u016f v\u00a0pohybu\">Fotografov\u00e1n\u00ed objekt\u016f v\u00a0pohybu<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.fotolab.cz\/blog\/svetelnost-objektivu-proc-je-dulezita\/#Fotografovani_portretu_blizkych_objektu\" title=\"Fotografov\u00e1n\u00ed portr\u00e9t\u016f, bl\u00edzk\u00fdch objekt\u016f\">Fotografov\u00e1n\u00ed portr\u00e9t\u016f, bl\u00edzk\u00fdch objekt\u016f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.fotolab.cz\/blog\/svetelnost-objektivu-proc-je-dulezita\/#Fotografovani_s_bleskem\" title=\"Fotografov\u00e1n\u00ed s\u00a0bleskem\">Fotografov\u00e1n\u00ed s\u00a0bleskem<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.fotolab.cz\/blog\/svetelnost-objektivu-proc-je-dulezita\/#Shrnuti\" title=\"Shrnut\u00ed\">Shrnut\u00ed<\/a><\/li><\/ul><\/nav><\/div>\n<p><strong>Z\u00e1kladn\u00edm technick\u00fdm parametrem \u00fapln\u011b ka\u017ed\u00e9ho objektivu je tzv. sv\u011btelnost. M\u016f\u017ee b\u00fdt jak prom\u011bnn\u00e1, tak fixn\u00ed. Ve v\u011bt\u0161\u00ed m\u00ed\u0159e p\u0159\u00edpad\u016f sv\u011bteln\u011bj\u0161\u00ed objektiv znamen\u00e1 dra\u017e\u0161\u00ed produkt (nejv\u00edce znateln\u00e9 u&nbsp;zoom\u016f). Pro\u010d si tedy po\u0159\u00eddit \u010dasto dra\u017e\u0161\u00ed objektivy s&nbsp;lep\u0161\u00ed sv\u011btelnost\u00ed, ne\u017e jejich m\u00e9n\u011b sv\u011bteln\u00e9 kolegy? Nejen to vysv\u011btl\u00edme v&nbsp;\u010dl\u00e1nku.<\/strong><\/p>\n<p><!--more--><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Svetelnost_objektivu\"><\/span>Sv\u011btelnost objektivu<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Sv\u011btelnost vypov\u00edd\u00e1 o&nbsp;mno\u017estv\u00ed sv\u011btla, kter\u00e9 jsou schopn\u00e9 objektivy p\u0159en\u00e9st na z\u00e1znamov\u00e9 m\u00e9dium fotoapar\u00e1tu (film, \u010dip atd.). Je ozna\u010dov\u00e1na p\u00edsmenem f&nbsp;a&nbsp;\u010d\u00edselnou hodnotou (nap\u0159. f\/2,8).<\/p>\n<blockquote><p><strong>Definice sv\u011btelnosti objektivu: Pom\u011br ohniskov\u00e9 vzd\u00e1lenosti v&nbsp;milimetrech k&nbsp;pr\u016fm\u011bru vstupn\u00ed pupily (v\u00a0mm). <\/strong><\/p><\/blockquote>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-24227 size-full\" src=\"https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/telefonni-budka-v-Londyne.jpg\" alt=\"\" width=\"1000\" height=\"707\" srcset=\"https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/telefonni-budka-v-Londyne.jpg 1000w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/telefonni-budka-v-Londyne-300x212.jpg 300w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/telefonni-budka-v-Londyne-768x543.jpg 768w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/telefonni-budka-v-Londyne-50x35.jpg 50w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><strong>Sv\u011btelnost u&nbsp;objektiv\u016f v\u00a0praxi znamen\u00e1:<\/strong><\/p>\n<ul>\n<li>Nejni\u017e\u0161\u00ed dosa\u017eiteln\u00fd odpor (\u010d\u00edseln\u011b vyj\u00e1d\u0159iteln\u00fd hodnotou \u201ef\u201c) pro sv\u011btlo proch\u00e1zej\u00edc\u00ed skrze optickou soustavu k\u00a0z\u00e1znamov\u00e9mu m\u00e9diu. N\u00edzk\u00fd odpor (intenzita sv\u011btla se t\u00e9m\u011b\u0159 nem\u011bn\u00ed) znamen\u00e1 mo\u017enost nastaven\u00ed ni\u017e\u0161\u00edch hodnot ISO = m\u00e9n\u011b \u0161umu na fotografi\u00edch.<\/li>\n<li>Nejni\u017e\u0161\u00ed clonov\u00e9 \u010d\u00edslo (maxim\u00e1ln\u011b otev\u0159en\u00e1 clona), kter\u00e9 lze nastavit na fotoapar\u00e1tu p\u0159i dan\u00e9 ohniskov\u00e9 vzd\u00e1lenosti (v\u011bt\u0161\u00ed sv\u011btelnost = objektivem proch\u00e1z\u00ed v\u00edce sv\u011btla = men\u0161\u00ed clonov\u00e9 \u010d\u00edslo).<\/li>\n<\/ul>\n<blockquote><p><strong>Nejsv\u011bteln\u011bj\u0161\u00ed objektivy, kter\u00e9 lze v&nbsp;sou\u010dasnosti v&nbsp;\u010cR b\u011b\u017en\u011b zakoupit, dosahuj\u00ed hodnot sv\u011btelnosti kolem f\/1. U&nbsp;v\u011bt\u0161iny objektiv\u016f se setk\u00e1te s&nbsp;hodnotami v&nbsp;rozmez\u00ed f\/1,2 \u2013 6,3.<\/strong><\/p><\/blockquote>\n<p>Pokud se \u010dasto pot\u00fdk\u00e1te s&nbsp;rozmazan\u00fdmi fotkami, pr\u00e1v\u011b hor\u0161\u00ed sv\u011btelnost m\u016f\u017ee b\u00fdt na vin\u011b, proto\u017ee se dosahuje del\u0161\u00edch expozi\u010dn\u00edch \u010das\u016f, ne\u017e je zapot\u0159eb\u00ed.<br \/>\n<strong>Nejsv\u011bteln\u011bj\u0161\u00ed b\u00fdvaj\u00ed objektivy s&nbsp;pevnou ohniskovou vzd\u00e1lenost\u00ed<\/strong>, nap\u0159. 35mm, 50mm, 85mm, 135mm. Cenov\u011b nejv\u00fdhodn\u011bj\u0161\u00ed jsou n\u011bkter\u00e9 pevn\u00e9 p\u011btat\u0159ic\u00edtky, \u010di pades\u00e1tky.<br \/>\n<strong>V\u00fdrobci ud\u00e1van\u00e1 sv\u011btelnost objektivu je vzta\u017eena k&nbsp;zaost\u0159en\u00ed na nekone\u010dno.<\/strong> Pokud je zaost\u0159eno na krat\u0161\u00ed vzd\u00e1lenosti, deklarovan\u00e1 sv\u011btelnost postupn\u011b kles\u00e1, kdy siln\u011bj\u0161\u00edho \u00fabytku je dosa\u017eeno p\u0159i focen\u00ed na velmi bl\u00edzkou vzd\u00e1lenost (macro m\u011b\u0159\u00edtko, nap\u0159. 1:1).<\/p>\n<div class=\"vlp-link-container vlp-layout-basic\"><a href=\"https:\/\/www.fotolab.cz\" class=\"vlp-link\" title=\"Portr\u00e9tn\u00ed Fujifilm XF 56mm f\/1.2 R\" rel=\"nofollow\" target=\"_blank\"><\/a><div class=\"vlp-layout-zone-side\"><div class=\"vlp-block-2 vlp-link-image\"><img decoding=\"async\" src=\"https:\/\/www.fotolab.cz\/imageserver\/x\/x\/scale\/p\/japan\/Produktbilder_1\/FotolabCZ_migrated\/fujifilm_xf_56mm_f12_r_1.jpg\" style=\"max-width: 150px; max-height: 150px\" \/><\/div><\/div><div class=\"vlp-layout-zone-main\"><div class=\"vlp-block-0 vlp-link-title\">Portr\u00e9tn\u00ed Fujifilm XF 56mm f\/1.2 R<\/div><div class=\"vlp-block-1 vlp-link-summary\">Fixn\u00ed st\u0159edn\u00ed teleobjektiv se \u0161pi\u010dkovou sv\u011btelnost\u00ed f\/1,2, kter\u00fd produkuje jemn\u00fd efekt bokeh a jeho 56mm ohniskov\u00e1 vzd\u00e1lenost, odpov\u00eddaj\u00edc 85 mm pro 35mm filmov\u00fd form\u00e1t, umo\u017e\u0148uje sn\u00edm\u00e1n\u00ed v pohodln\u00e9 vzd\u00e1lenosti od objektu.<\/div><\/div><\/div>\n<blockquote><p><strong><a class=\"gridlove-popup-img\" href=\"https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/fotka-bubenika-na-koncertu_v1.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-23908\" src=\"https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/fotka-bubenika-na-koncertu_v1-300x200.jpg\" alt=\"\" width=\"71\" height=\"47\" srcset=\"https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/fotka-bubenika-na-koncertu_v1-300x200.jpg 300w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/fotka-bubenika-na-koncertu_v1-768x511.jpg 768w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/fotka-bubenika-na-koncertu_v1-50x33.jpg 50w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/fotka-bubenika-na-koncertu_v1.jpg 850w\" sizes=\"(max-width: 71px) 100vw, 71px\" \/><\/a>\u010ct\u011bte tak\u00e9 na blogu:<\/strong><a href=\"https:\/\/www.fotolab.cz\/blog\/foceni-ve-spatnem-svetle\/\" target=\"_blank\" rel=\"noopener noreferrer\"><strong> 5 tip\u016f pro focen\u00ed ve \u0161patn\u00e9m sv\u011btle<\/strong><\/a><\/p><\/blockquote>\n<h2><span class=\"ez-toc-section\" id=\"V_jakych_situacich_je_svetelnost_vhodne_resit\"><\/span>V jak\u00fdch situac\u00edch je sv\u011btelnost vhodn\u00e9 \u0159e\u0161it<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Fotografovani_za_horsich_svetelnych_podminek\"><\/span><strong>Fotografov\u00e1n\u00ed za hor\u0161\u00edch sv\u011bteln\u00fdch podm\u00ednek<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Objektiv nesn\u00ed\u017e\u00ed razantn\u011b mno\u017estv\u00ed dopadaj\u00edc\u00edho sv\u011btla na \u010dip = <strong>lze nastavit ni\u017e\u0161\u00ed hodnotu ISO<\/strong> = fotografie nebude tolik degradov\u00e1na \u0161umem.<\/p>\n<h3><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-24230 size-full\" src=\"https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/Mesto-Fulnek.jpg\" alt=\"\" width=\"850\" height=\"567\" srcset=\"https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/Mesto-Fulnek.jpg 850w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/Mesto-Fulnek-300x200.jpg 300w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/Mesto-Fulnek-768x512.jpg 768w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/Mesto-Fulnek-50x33.jpg 50w\" sizes=\"(max-width: 850px) 100vw, 850px\" \/><\/h3>\n<p>Vy\u0161\u0161\u00ed sv\u011btelnost objektivu:<\/p>\n<ul>\n<li>zajist\u00ed kvalitn\u011bj\u0161\u00ed a&nbsp;jasn\u011bj\u0161\u00ed obraz v&nbsp;hled\u00e1\u010dku p\u0159i porovn\u00e1n\u00ed s&nbsp;m\u00e9n\u011b sv\u011bteln\u00fdm objektivem<\/li>\n<li>poskytne v\u00edce sv\u011btla pro AF senzor zrcadlovky = ost\u0159en\u00ed bude efektivn\u011bj\u0161\u00ed<\/li>\n<\/ul>\n<div class=\"vlp-link-container vlp-layout-basic\"><a href=\"https:\/\/www.fotolab.cz\/produkty\/canon-ef-24-105mm-f-4l-is-ii-usm\" class=\"vlp-link\" title=\"Fotografov\u00e1n\u00ed p\u0159\u00edrody s objektivem Canon EF 24-105mm f\/4L IS II USM\" rel=\"nofollow\" target=\"_blank\"><\/a><div class=\"vlp-layout-zone-side\"><div class=\"vlp-block-2 vlp-link-image\"><img decoding=\"async\" src=\"https:\/\/www.fotolab.cz\/imageserver\/x\/x\/scale\/p\/japan\/Produktbilder_1\/FotolabCZ_migrated\/80047996__canon_ef_24-105mm_f4l_is_ii_usm_(1).jpg\" style=\"max-width: 150px; max-height: 150px\" \/><\/div><\/div><div class=\"vlp-layout-zone-main\"><div class=\"vlp-block-0 vlp-link-title\">Fotografov\u00e1n\u00ed p\u0159\u00edrody s objektivem Canon EF 24-105mm f\/4L IS II USM<\/div><div class=\"vlp-block-1 vlp-link-summary\">Canon EF 24-105mm f\/4L IS\u00a0II\u00a0USM je zoomov\u00fd objektiv, kter\u00fd v\u00e1m p\u0159i fotografov\u00e1n\u00ed i\u00a0filmov\u00e1n\u00ed pom\u016f\u017ee dostat se bl\u00ed\u017ee k\u00a0d\u011bn\u00ed. <\/div><\/div><\/div>\n<h3><span class=\"ez-toc-section\" id=\"Fotografovani_objektu_v_pohybu\"><\/span><strong>Fotografov\u00e1n\u00ed objekt\u016f v\u00a0pohybu<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Kdy\u017e p\u0159es objektiv projde v\u00edce sv\u011btla, <strong>m\u016f\u017eete fotit na krat\u0161\u00ed \u010dasy z\u00e1v\u011brky<\/strong>, kter\u00e9 jsou pot\u0159eba k&nbsp;\u201ezamrazen\u00ed\u201c pohybu = prevence rozmaz\u00e1n\u00ed.<\/p>\n<p>V praxi to tedy znamen\u00e1, \u017ee na fotoapar\u00e1tu s&nbsp;objektivem s&nbsp;hor\u0161\u00ed sv\u011btelnost\u00ed (nap\u0159. objektiv 18-55mm f3,5-5,6) budete muset nastavovat del\u0161\u00ed expozi\u010dn\u00ed \u010dasy, abyste dos\u00e1hli kvalitn\u00ed fotografie bez znateln\u00e9ho \u0161umu, ne\u017e v&nbsp;p\u0159\u00edpad\u011b fotoapar\u00e1tu se sv\u011bteln\u00fdm objektivem. To m\u016f\u017ee v\u00e9st k\u00a0tomu, \u017ee:<\/p>\n<ul>\n<li>pohybuj\u00edc\u00ed se objekty budou rozmazan\u00e9<\/li>\n<li>statick\u00fd obraz bude rozmazan\u00fd, pokud nebude pou\u017eit stativ<\/li>\n<li>vznikne kombinace oboj\u00edho v\u00fd\u0161e uveden\u00e9ho<\/li>\n<\/ul>\n<h3><\/h3>\n<p style=\"text-align: center;\"><a class=\"gridlove-popup-img\" href=\"https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/kone-bezici-po-plazi_2.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-24225\" src=\"https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/kone-bezici-po-plazi_2.jpg\" alt=\"\" width=\"1000\" height=\"667\" srcset=\"https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/kone-bezici-po-plazi_2.jpg 1000w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/kone-bezici-po-plazi_2-300x200.jpg 300w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/kone-bezici-po-plazi_2-768x512.jpg 768w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/kone-bezici-po-plazi_2-50x33.jpg 50w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/a><\/p>\n<div class=\"vlp-link-container vlp-layout-basic\"><a href=\"https:\/\/www.fotolab.cz\/produkty\/olympus-m-zuiko-digital-ed-75-300mm-f-4-8-6-7-ii-cerny\" class=\"vlp-link\" title=\"Sport a wildlife s objektivem Olympus M.ZUIKO DIGITAL ED 75-300mm f\/4.8-6.7 II\" rel=\"nofollow\" target=\"_blank\"><\/a><div class=\"vlp-layout-zone-side\"><div class=\"vlp-block-2 vlp-link-image\"><img decoding=\"async\" src=\"https:\/\/www.fotolab.cz\/imageserver\/x\/x\/scale\/p\/japan\/Produktbilder_1\/FotolabCZ_migrated\/ol_75300_ii_black_1.jpg\" style=\"max-width: 150px; max-height: 150px\" \/><\/div><\/div><div class=\"vlp-layout-zone-main\"><div class=\"vlp-block-0 vlp-link-title\">Sport a wildlife s objektivem Olympus M.ZUIKO DIGITAL ED 75-300mm f\/4.8-6.7 II<\/div><div class=\"vlp-block-1 vlp-link-summary\">Tento Micro 4\/3 super-teleobjektiv je vhodn\u00fd p\u0159edev\u0161\u00edm pro z\u00e1b\u011bry velmi vzd\u00e1len\u00fdch objekt\u016f, kter\u00e9 m\u016f\u017eete snadno p\u0159ibl\u00ed\u017eit a\u017e na dosah ruky.<\/div><\/div><\/div>\n<h3><span class=\"ez-toc-section\" id=\"Fotografovani_portretu_blizkych_objektu\"><\/span><strong>Fotografov\u00e1n\u00ed portr\u00e9t\u016f, bl\u00edzk\u00fdch objekt\u016f<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>N\u00edzk\u00e9 clonov\u00e9 \u010d\u00edslo = men\u0161\u00ed hloubka ostrosti<\/strong><br \/>\nSv\u011bteln\u00e9 a&nbsp;ultrasv\u011bteln\u00e9 objektivy (f\/2,8 a&nbsp;ni\u017e\u0161\u00ed \u010d\u00edsla) mnohem snadn\u011bji dok\u00e1\u017e\u00ed p\u0159irozen\u011b rozmazat pozad\u00ed fotografovan\u00fdch objekt\u016f = je dosa\u017eeno <strong>tzv. mal\u00e9 hloubky ostrosti<\/strong>.<br \/>\nSamotnou hloubku ostrosti lze v\u0161ak ovlivnit i&nbsp;jinak. Plat\u00ed, \u017ee \u010d\u00edm bl\u00ed\u017ee se nach\u00e1z\u00ed fotograf k\u00a0focen\u00e9mu objektu a&nbsp;z\u00e1rove\u0148 objekt je co nejv\u00edce vzd\u00e1len od pozad\u00ed, t\u00edm v\u00edce bude pozad\u00ed rozost\u0159en\u00e9.<\/p>\n<p><a class=\"gridlove-popup-img\" href=\"https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/NIK_9386x.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-24221\" src=\"https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/NIK_9386x.jpg\" alt=\"\" width=\"1000\" height=\"750\" srcset=\"https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/NIK_9386x.jpg 1000w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/NIK_9386x-300x225.jpg 300w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/NIK_9386x-768x576.jpg 768w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/NIK_9386x-50x38.jpg 50w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/a><\/p>\n<div class=\"row-fluid\">\n<div class=\"span6 rhcol\"><a class=\"gridlove-popup-img\" href=\"https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/OL222624.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-24224 size-medium\" src=\"https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/OL222624-300x200.jpg\" alt=\"\" width=\"300\" height=\"200\" srcset=\"https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/OL222624-300x200.jpg 300w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/OL222624-768x512.jpg 768w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/OL222624-1024x683.jpg 1024w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/OL222624-50x33.jpg 50w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/OL222624.jpg 1200w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/div>\n<div class=\"span6 rhcol\"><a class=\"gridlove-popup-img\" href=\"https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/OL313284.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-24222 size-medium\" src=\"https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/OL313284-300x205.jpg\" alt=\"\" width=\"300\" height=\"205\" srcset=\"https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/OL313284-300x205.jpg 300w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/OL313284-768x525.jpg 768w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/OL313284-50x34.jpg 50w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/OL313284.jpg 1000w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/div>\n<\/div>\n<blockquote><p><a href=\"https:\/\/www.fotolab.cz\/blog\/makro-a-detail\/\" target=\"_blank\" rel=\"noopener noreferrer\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-1220\" src=\"https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2015\/03\/IMG_1083-150x150.jpg\" alt=\"\" width=\"47\" height=\"47\" srcset=\"https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2015\/03\/IMG_1083-150x150.jpg 150w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2015\/03\/IMG_1083-70x70.jpg 70w\" sizes=\"(max-width: 47px) 100vw, 47px\" \/><\/a><\/p>\n<p><strong>\u010ct\u011bte tak\u00e9 na blogu:<\/strong><a href=\"https:\/\/www.fotolab.cz\/blog\/makro-a-detail\/\" target=\"_blank\" rel=\"noopener noreferrer\"><strong> Makro a&nbsp;detail: jak dos\u00e1hnout p\u016fsobiv\u00fdch fotografi\u00ed<\/strong><\/a><\/p><\/blockquote>\n<h3><span class=\"ez-toc-section\" id=\"Fotografovani_s_bleskem\"><\/span><strong>Fotografov\u00e1n\u00ed s\u00a0bleskem<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>N\u00edzk\u00e9 clonov\u00e9 \u010d\u00edslo = vy\u0161\u0161\u00ed dosah blesku v\u00a0metrech<\/strong><br \/>\nJakmile nastav\u00edte ni\u017e\u0161\u00ed clonov\u00e1 \u010d\u00edsla, tak odpov\u00eddaj\u00edc\u00edm zp\u016fsobem zv\u00fd\u0161\u00edte dosah osv\u011btlen\u00ed bleskem (a\u0165 u\u017e intern\u00ed, tak extern\u00edm). Pokud nastav\u00edte z\u00e1rove\u0148 i&nbsp;vy\u0161\u0161\u00ed ISO, op\u011bt o&nbsp;n\u011bco prodlou\u017e\u00edte dosah blesku.<\/p>\n<div class=\"vlp-link-container vlp-layout-basic\"><a href=\"https:\/\/www.fotolab.cz\/produkty\/canon-canon-speedlite-600ex-ii-rt\" class=\"vlp-link\" title=\"Canon Speedlite 600EX II-RT\" rel=\"nofollow\" target=\"_blank\"><\/a><div class=\"vlp-layout-zone-side\"><div class=\"vlp-block-2 vlp-link-image\"><img decoding=\"async\" src=\"https:\/\/www.fotolab.cz\/imageserver\/x\/x\/scale\/p\/japan\/Produktbilder_1\/FotolabCZ_migrated\/84486.jpg\" style=\"max-width: 150px; max-height: 150px\" \/><\/div><\/div><div class=\"vlp-layout-zone-main\"><div class=\"vlp-block-0 vlp-link-title\">Canon Speedlite 600EX II-RT<\/div><div class=\"vlp-block-1 vlp-link-summary\">Blesk Speedlite 600EX II-RT poskytuje nekompromisn\u00ed v\u00fdkon, co\u017e z n\u011bj vytv\u00e1\u0159\u00ed ide\u00e1ln\u00edho spole\u010dn\u00edka pro fotoapar\u00e1t EOS-1D X Mark II.<\/div><\/div><\/div>\n<p style=\"text-align: center;\"><strong><a href=\"https:\/\/www.fotolab.cz\/blesky\/blesky-blesky\" target=\"_blank\" rel=\"noopener\">Dal\u0161\u00ed extern\u00ed blesky na e-shopu<\/a><\/strong><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Shrnuti\"><\/span>Shrnut\u00ed<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Bez sv\u011bteln\u00fdch objektiv\u016f se neobejdete nap\u0159. p\u0159i seri\u00f3zn\u00edm <u><strong>fotografov\u00e1n\u00ed sportu, zv\u00ed\u0159at<\/strong><\/u>, <strong>svateb, no\u010dn\u00ed oblohy, hudebn\u00edch koncert\u016f<\/strong>&#8230; N\u011bkter\u00e9 akce bez dostate\u010dn\u00e9 sv\u011btelnosti u&nbsp;objektiv\u016f kvalitn\u011b nevyfot\u00edte.<\/p>\n<p>Pokud za\u010d\u00edn\u00e1te s&nbsp;fotografov\u00e1n\u00edm, chcete si vyzkou\u0161et pr\u00e1ci se sv\u011bteln\u00fdmi objektivy, doporu\u010dujeme za\u010d\u00edt pracovat s&nbsp;cenov\u011b dostupn\u00fdmi variantami, kter\u00e9 maj\u00ed obvykle sv\u011btelnost f\/1,4-1,8. Jako p\u0159\u00edklad lze uv\u00e9st n\u00e1sleduj\u00edc\u00ed objektivy s&nbsp;v\u00fdborn\u00fdm pom\u011brem cena \/ v\u00fdkon:<\/p>\n<div class=\"row-fluid\">\n<div class=\"span6 rhcol\"><span style=\"color: #000000;\"><strong><a style=\"color: #000000;\" class=\"gridlove-popup-img\" href=\"https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2018\/12\/canon_ef_50mm_f18_stm_1_z1-e1544026107901.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-22450 alignleft\" src=\"https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2018\/12\/canon_ef_50mm_f18_stm_1_z1-300x300.jpg\" alt=\"\" width=\"42\" height=\"42\" \/><\/a><a style=\"color: #000000;\" href=\"https:\/\/www.fotolab.cz\/canon-ef-50mm-f-1-8-stm\" target=\"_blank\" rel=\"noopener noreferrer\">Canon EF 50mm f\/1.8 STM<\/a><\/strong><\/span><br \/>\n<span style=\"color: #000000;\"><strong>cena: 3&nbsp;490&nbsp;K\u010d<br \/>\n<\/strong><\/span><br \/>\n<span style=\"color: #000000;\"><strong><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-11284 alignleft\" src=\"https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2017\/04\/Nikon-50mm-f1.8-300x300.jpg\" alt=\"Portr\u00e9tn\u00ed objektivy\" width=\"39\" height=\"39\" srcset=\"https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2017\/04\/Nikon-50mm-f1.8-300x300.jpg 300w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2017\/04\/Nikon-50mm-f1.8-150x150.jpg 150w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2017\/04\/Nikon-50mm-f1.8-70x70.jpg 70w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2017\/04\/Nikon-50mm-f1.8-50x50.jpg 50w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2017\/04\/Nikon-50mm-f1.8-400x400.jpg 400w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2017\/04\/Nikon-50mm-f1.8-350x350.jpg 350w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2017\/04\/Nikon-50mm-f1.8-200x200.jpg 200w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2017\/04\/Nikon-50mm-f1.8-51x51.jpg 51w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2017\/04\/Nikon-50mm-f1.8.jpg 750w\" sizes=\"(max-width: 39px) 100vw, 39px\" \/><a style=\"color: #000000;\" href=\"https:\/\/www.fotolab.cz\/nikon-50mm-f-1-8g-af-s\" target=\"_blank\" rel=\"noopener noreferrer\">Nikon 50mm f\/1.8G AF-S<\/a><br \/>\ncena: 4&nbsp;990&nbsp;K\u010d<\/strong><\/span><\/div>\n<div class=\"span6 rhcol\"><span style=\"color: #000000;\"><strong><a style=\"color: #000000;\" class=\"gridlove-popup-img\" href=\"https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/pentax_50mm_f18_1_z1-e1550497272889.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-24208 alignleft\" src=\"https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/pentax_50mm_f18_1_z1-e1550497272889-300x272.jpg\" alt=\"\" width=\"44\" height=\"40\" srcset=\"https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/pentax_50mm_f18_1_z1-e1550497272889-300x272.jpg 300w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/pentax_50mm_f18_1_z1-e1550497272889-50x45.jpg 50w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/pentax_50mm_f18_1_z1-e1550497272889-768x696.jpg 768w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/pentax_50mm_f18_1_z1-e1550497272889.jpg 800w\" sizes=\"(max-width: 44px) 100vw, 44px\" \/><\/a>Pentax smc DA 50mm f\/1.8<\/strong><\/span><br \/>\n<span style=\"color: #000000;\"><strong>cena: 3&nbsp;690&nbsp;K\u010d<br \/>\n<\/strong><\/span><br \/>\n<span style=\"color: #000000;\"><strong><a style=\"color: #000000;\" class=\"gridlove-popup-img\" href=\"https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/sony_fe_50mm_f18.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-24209 alignleft\" src=\"https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/sony_fe_50mm_f18-e1550497487637-262x300.jpg\" alt=\"\" width=\"45\" height=\"51\" srcset=\"https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/sony_fe_50mm_f18-e1550497487637-262x300.jpg 262w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/sony_fe_50mm_f18-e1550497487637-768x879.jpg 768w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/sony_fe_50mm_f18-e1550497487637-44x50.jpg 44w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/sony_fe_50mm_f18-e1550497487637.jpg 800w\" sizes=\"(max-width: 45px) 100vw, 45px\" \/><\/a><a style=\"color: #000000;\" href=\"https:\/\/www.fotolab.cz\/sony-fe-50mm-f-1-8-cerny\" target=\"_blank\" rel=\"noopener noreferrer\">Sony FE 50mm f\/1.8<\/a><br \/>\ncena: 5&nbsp;990&nbsp;K\u010d<\/strong><\/span><\/div>\n<\/div>\n<div>\n<p><span style=\"color: #000000;\"><strong><a style=\"color: #000000;\" class=\"gridlove-popup-img\" href=\"https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/panasonic_lumix_g_25mm_f17_asph_2-1.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-24205 alignleft\" src=\"https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/panasonic_lumix_g_25mm_f17_asph_2-1-268x300.jpg\" alt=\"\" width=\"37\" height=\"41\" srcset=\"https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/panasonic_lumix_g_25mm_f17_asph_2-1-268x300.jpg 268w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/panasonic_lumix_g_25mm_f17_asph_2-1-45x50.jpg 45w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/panasonic_lumix_g_25mm_f17_asph_2-1.jpg 715w\" sizes=\"(max-width: 37px) 100vw, 37px\" \/><\/a>Pana<span style=\"color: #000000;\">sonic Lumix G&nbsp;25mm f\/1.7 ASPH.<\/span><br \/>\n<span style=\"color: #000000;\">cena: 4&nbsp;990&nbsp;K\u010d<\/span><\/strong><\/span><\/p>\n<p class=\"fn\"><span style=\"color: #000000;\"><strong>Sigma 30mm f\/1.4 DC DN <span class=\"pdp-product-name\" data-for-catalog-entry=\"1496260\">Contemporary (Micro 4\/3)<\/span><\/strong><\/span><\/p>\n<p id=\"test_product_name\" class=\"fn\"><span style=\"color: #000000;\"><strong><span style=\"color: #000000;\"><a style=\"color: #000000;\" href=\"https:\/\/www.fotolab.cz\/eshop\/index.php?stoken=F5D4122B&amp;force_sid=bc38clsq6m5l6e37oqtimb2u10&amp;lang=2&amp;currency=0&amp;cl=searchfulltext&amp;searchparamfull=Sigma+30mm+f%2F1.4+DC+DN\" target=\"_blank\" rel=\"noopener noreferrer\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-24244 \" src=\"https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/sigma_30mm_f14_dc_dn_contemporary_2-227x300.jpg\" alt=\"\" width=\"36\" height=\"47\" srcset=\"https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/sigma_30mm_f14_dc_dn_contemporary_2-227x300.jpg 227w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/sigma_30mm_f14_dc_dn_contemporary_2-38x50.jpg 38w, https:\/\/www.fotolab.cz\/blog\/wp-content\/uploads\/2019\/02\/sigma_30mm_f14_dc_dn_contemporary_2.jpg 302w\" sizes=\"(max-width: 36px) 100vw, 36px\" \/><\/a>cena: 8&nbsp;290&nbsp;K\u010d<\/span><br \/>\n<\/strong><\/span><\/p>\n<\/div>\n<p>&nbsp;<\/p>\n<p><strong>Pozn\u00e1mka: Ceny objektiv\u016f jsou orienta\u010dn\u00ed, aktu\u00e1ln\u00ed jsou k&nbsp;dispozici na <a href=\"http:\/\/www.fotolab.cz\/eshop\" target=\"_blank\" rel=\"noopener noreferrer\">www.fotolab.cz\/eshop<\/a>.<\/strong><\/p>\n<div class=\"span6 rhcol\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Z\u00e1kladn\u00edm technick\u00fdm parametrem \u00fapln\u011b ka\u017ed\u00e9ho objektivu je tzv. sv\u011btelnost. M\u016f\u017ee b\u00fdt jak prom\u011bnn\u00e1, tak fixn\u00ed. Ve v\u011bt\u0161\u00ed m\u00ed\u0159e p\u0159\u00edpad\u016f sv\u011bteln\u011bj\u0161\u00ed objektiv znamen\u00e1 dra\u017e\u0161\u00ed produkt (nejv\u00edce znateln\u00e9 u&nbsp;zoom\u016f). Pro\u010d si tedy po\u0159\u00eddit \u010dasto dra\u017e\u0161\u00ed objektivy s&nbsp;lep\u0161\u00ed sv\u011btelnost\u00ed, ne\u017e jejich m\u00e9n\u011b sv\u011bteln\u00e9 kolegy? Nejen to vysv\u011btl\u00edme v&nbsp;\u010dl\u00e1nku.<\/p>\n","protected":false},"author":266,"featured_media":24258,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[256,559,18,407],"tags":[668,88,946,1300,434,259,1298,435,1299],"class_list":["post-24203","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fotograficka-poradna","category-fotolab-fotoradce","category-novinky","category-objektivy","tag-bokeh","tag-fotografovani","tag-fotoradce","tag-hloubka-ostrosti","tag-objektiv","tag-poradna","tag-svetelnost","tag-svetelny-objektiv","tag-zoom"],"wppr_data":{"cwp_meta_box_check":"No"},"_links":{"self":[{"href":"https:\/\/www.fotolab.cz\/blog\/wp-json\/wp\/v2\/posts\/24203"}],"collection":[{"href":"https:\/\/www.fotolab.cz\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fotolab.cz\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fotolab.cz\/blog\/wp-json\/wp\/v2\/users\/266"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fotolab.cz\/blog\/wp-json\/wp\/v2\/comments?post=24203"}],"version-history":[{"count":11,"href":"https:\/\/www.fotolab.cz\/blog\/wp-json\/wp\/v2\/posts\/24203\/revisions"}],"predecessor-version":[{"id":53564,"href":"https:\/\/www.fotolab.cz\/blog\/wp-json\/wp\/v2\/posts\/24203\/revisions\/53564"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.fotolab.cz\/blog\/wp-json\/wp\/v2\/media\/24258"}],"wp:attachment":[{"href":"https:\/\/www.fotolab.cz\/blog\/wp-json\/wp\/v2\/media?parent=24203"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fotolab.cz\/blog\/wp-json\/wp\/v2\/categories?post=24203"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fotolab.cz\/blog\/wp-json\/wp\/v2\/tags?post=24203"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}