{"id":741,"date":"2020-05-17T16:22:48","date_gmt":"2020-05-17T16:22:48","guid":{"rendered":"https:\/\/erdemzengin.com.tr\/?p=741"},"modified":"2021-05-27T09:25:18","modified_gmt":"2021-05-27T09:25:18","slug":"odak-degisimine-gore-objektifler","status":"publish","type":"post","link":"https:\/\/erdemzengin.com.tr\/index.php\/2020\/05\/17\/odak-degisimine-gore-objektifler\/","title":{"rendered":"Odak De\u011fi\u015fimine G\u00f6re Objektifler"},"content":{"rendered":"\n

Odak de\u011fi\u015fimine g\u00f6re objektifler ikiye ayr\u0131l\u0131r.<\/p>\n\n\n\n

1 Sabit Odakl\u0131 Objektifler<\/strong><\/h4>\n\n\n\n

Zoom yapma \u00f6zellikleri bulunmaz. Kullan\u0131c\u0131 konuya yak\u0131nla\u015fmak i\u00e7in fiziksel olarak konuya yakla\u015f\u0131r. Uzakla\u015fmak i\u00e7in de ayn\u0131 \u015feklide fiziksel olarak geri \u00e7ekilir. 35 mm, 50 mm, 85 mm 300 mm gibi bir \u00e7ok \u00e7e\u015fidi bulunan objektiflerdir. I\u015f\u0131k ge\u00e7irgenlikleri (F De\u011feri) y\u00fcksek objektiflerdir. 1:1,8 (Maksimum F1,8) 1:2,8 (Maksimum F2,8) gibi de\u011ferlere ula\u015fabilirler.<\/p>\n\n\n\n

Keskin ve net g\u00f6r\u00fcnt\u00fcler verirler. Keskinlik ve netlik birbiri ile kar\u0131\u015ft\u0131r\u0131lan birbirine yak\u0131n kavramlard\u0131r. Bu objektifler sayesinde ikisi konusunda da renkler konusunda da \u00fcst\u00fcn performans sa\u011flan\u0131r.<\/p>\n\n\n\n

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50 mm sabit odakl\u0131 objektif<\/figcaption><\/figure>\n\n\n\n

H\u0131zl\u0131d\u0131rlar. H\u0131zlar\u0131 \u00fc\u00e7 \u015fekilde kar\u015f\u0131m\u0131za \u00e7\u0131kar; \u00c7ok h\u0131zl\u0131 netleme yaparlar. F de\u011ferinin \u00e7ok a\u00e7\u0131labilmesi sayesinde karanl\u0131kta daha k\u0131sa s\u00fcrede foto\u011fraf \u00e7ekerler. Son olarak bu iki ger\u00e7eklik saniye\/kare h\u0131z\u0131n\u0131n da y\u00fcksek olmas\u0131n\u0131 sa\u011flar.<\/p>\n\n\n\n

2 De\u011fi\u015fken Odakl\u0131 (Zoom) Objektifler<\/strong><\/h4>\n\n\n\n

Zoom yapabildikleri i\u00e7in de\u011fi\u015fik odak uzakl\u0131klar\u0131nda \u00e7ekim yapma \u015fans\u0131 verirler. Baz\u0131 \u00f6rnekler \u00fczerinden gidecek olursak;<\/p>\n\n\n\n

18 \u2013 135 mm: <\/strong>Bu objektifin 18 \u2013 49  mm aras\u0131 geni\u015f a\u00e7\u0131, 50 mm normal a\u00e7\u0131 ve 51 \u2013 135 mm aras\u0131 ise dar a\u00e7\u0131 (tele) objektiftir.<\/p>\n\n\n\n

18 \u2013 140 mm: <\/strong>Bu objektifin 18 \u2013 49  mm aras\u0131 geni\u015f a\u00e7\u0131, 50 mm normal a\u00e7\u0131 ve 51 \u2013 140 mm aras\u0131 ise dar a\u00e7\u0131 (tele) objektiftir.<\/p>\n\n\n\n

18 \u2013 55 mm: <\/strong>Bu objektifin 18 \u2013 49  mm aras\u0131 geni\u015f a\u00e7\u0131, 50 mm normal a\u00e7\u0131 ve 51 \u2013 55 mm aras\u0131 ise dar a\u00e7\u0131 (tele) objektiftir. Bu objektiflerde tele objektifin verdi\u011fi etki g\u00f6r\u00fclmez. Ayn\u0131 zamanda 50 mm de F 5 de\u011ferinde \u0131\u015f\u0131k ge\u00e7irgenli\u011fi verdikleri i\u00e7in net alan derinli\u011fi uygulamalar\u0131nda da sorun ya\u015fat\u0131rlar.<\/p>\n\n\n\n

24 \u2013 105 mm:<\/strong> Bu objektifin 24 \u2013 49  mm aras\u0131 geni\u015f a\u00e7\u0131, 50 mm normal a\u00e7\u0131 ve 51 \u2013 105 mm aras\u0131 ise dar a\u00e7\u0131 (tele) objektiftir.<\/p>\n\n\n\n

24 \u2013 85 mm: <\/strong>Bu objektifin 24 \u2013 49  mm aras\u0131 geni\u015f a\u00e7\u0131, 50 mm normal a\u00e7\u0131 ve 51 \u2013 85 mm aras\u0131 ise dar a\u00e7\u0131 (tele) objektiftir.<\/p>\n\n\n\n

K\u0131sacas\u0131 bu \u00f6rneklerde g\u00f6z\u00fckt\u00fc\u011f\u00fc gibi her \u00fc\u00e7 objektif tipini de sa\u011flayan de\u011fi\u015fken odakl\u0131 (tak gez) objektifler bulunmaktad\u0131r.  Bunlar \u0131\u015f\u0131k ge\u00e7irgenli\u011fi konusunda sabit odakl\u0131 objektifler kadar iddial\u0131 de\u011fildir. Netleme sabit odakl\u0131 objektiflere g\u00f6re daha yava\u015ft\u0131r. Sabit odakl\u0131 objektifler kadar keskin kareler veremezler. Bu tip objektifler sabit odakl\u0131 objektifler kadar canl\u0131 foto\u011fraflar veremezler. Kullan\u0131mlar\u0131 kolayd\u0131r. Konuya s\u00fcrekli yakla\u015f\u0131p uzakla\u015fmak yerine zom yaparak daha rahat \u00e7al\u0131\u015fma imkan\u0131 verirler.<\/p>\n\n\n\n

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18-140 mm de\u011fi\u015fken odakl\u0131 (zom) objektif<\/figcaption><\/figure>\n\n\n\n

Unutulmamad\u0131r ki sabit odakl\u0131 (zom yapamayan) objektifler de\u011fi\u015fken odakl\u0131 objektiflere g\u00f6re \u00e7ok daha kaliteli g\u00f6r\u00fcnt\u00fcler verir. \u00d6rne\u011fin 70 \u2013 300 mm ve ya 28 \u2013 300 gibi objektiflerin 300 mm odak uzakl\u0131\u011f\u0131 asla sabit odakl\u0131 bir 300 mm objektif gibi kaliteli g\u00f6r\u00fcnt\u00fcler sa\u011flayamaz.<\/p>\n\n\n\n

Bu bilgiler \u0131\u015f\u0131\u011f\u0131nda foto\u011fraf konular\u0131na g\u00f6re objektifler se\u00e7ilmelidir. B\u00fct\u00fcn konular i\u00e7in uygun olan bir objektif tipi bulunmamaktad\u0131r.<\/p>\n\n\n\n

Bol \u0131\u015f\u0131kl\u0131 g\u00fcnler
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