{"id":12166,"date":"2018-06-09T11:10:57","date_gmt":"2018-06-09T07:40:57","guid":{"rendered":"https:\/\/www.pixel.ir\/blog\/?p=12166"},"modified":"2018-06-09T10:20:21","modified_gmt":"2018-06-09T06:50:21","slug":"nd-filters-why-and-how","status":"publish","type":"post","link":"https:\/\/www.pixel.ir\/blog\/nd-filters-why-and-how\/","title":{"rendered":"\u0686\u0631\u0627 \u0648 \u0686\u06af\u0648\u0646\u0647 \u0628\u0627\u06cc\u062f \u0627\u0632 \u0641\u06cc\u0644\u062a\u0631\u0647\u0627\u06cc ND \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u0645\u061f"},"content":{"rendered":"

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<\/p>\n

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\"\"<\/p>\n

\u0627\u0644\u0628\u062a\u0647 \u0628\u0631\u062e\u06cc \u0627\u0632 \u0639\u06a9\u0627\u0633\u0627\u0646 \u0628\u0647 \u0627\u06cc\u0646 \u062f\u0644\u06cc\u0644 \u0627\u0632 \u0641\u06cc\u0644\u062a\u0631\u0647\u0627\u06cc ND \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc\u200c\u06a9\u0646\u0646\u062f \u06a9\u0647 \u0628\u062a\u0648\u0627\u0646\u0646\u062f \u062a\u0646\u0638\u06cc\u0645\u0627\u062a \u062f\u0648\u0631\u0628\u06cc\u0646\u0634\u0627\u0646 \u0631\u0627 \u0628\u0631 \u0631\u0648\u06cc \u0634\u0627\u0631\u067e\u200c\u062a\u0631\u06cc\u0646 \u062d\u0627\u0644\u062a \u0645\u0645\u06a9\u0646 \u0642\u0631\u0627\u0631 \u062f\u0647\u0646\u062f. \u0627\u06a9\u062b\u0631 \u0644\u0646\u0632\u0647\u0627 \u062a\u0627 F\/11 \u0642\u0627\u062f\u0631 \u0628\u0647 \u062b\u0628\u062a \u0634\u0627\u0631\u067e\u200c\u062a\u0631\u06cc\u0646 \u0639\u06a9\u0633\u200c\u0647\u0627 \u0647\u0633\u062a\u0646\u062f \u0648 \u0628\u0627 \u0628\u0633\u062a\u0646 \u0628\u06cc\u0634\u062a\u0631 \u062f\u06cc\u0627\u0641\u0631\u0627\u06af\u0645 \u0628\u0647\u200c\u0633\u0631\u0639\u062a \u0634\u0627\u0631\u067e\u0646\u0633 \u062e\u0648\u062f \u0631\u0627 \u0627\u0632 \u062f\u0633\u062a \u0645\u06cc\u200c\u062f\u0647\u0646\u062f. \u0628\u0646\u0627\u0628\u0631\u0627\u06cc\u0646 \u062d\u062a\u06cc \u0627\u06af\u0631 \u0628\u062a\u0648\u0627\u0646\u06cc\u062f \u062f\u0631 \u0637\u0648\u0644 \u0631\u0648\u0632 \u0628\u0627 \u0627\u0646\u062a\u062e\u0627\u0628 f\/22 \u0628\u0647\u200c \u0646\u062a\u06cc\u062c\u0647 \u0645\u0648\u0631\u062f\u0646\u0638\u0631\u062a\u0627\u0646 \u062f\u0633\u062a \u067e\u06cc\u062f\u0627 \u06a9\u0646\u06cc\u062f\u060c \u0628\u0647\u062a\u0631 \u0627\u0633\u062a \u0627\u0632 \u06cc\u06a9 \u0641\u06cc\u0644\u062a\u0631 ND \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0631\u062f\u0647 \u0648 \u0628\u0627 \u062f\u06cc\u0627\u0641\u0631\u0627\u06af\u0645 F\/16\u060c F\/11 \u06cc\u0627 \u0628\u0627\u0632\u062a\u0631 \u0639\u06a9\u0627\u0633\u06cc \u06a9\u0646\u06cc\u062f. \u0628\u0647\u200c\u0627\u06cc\u0646\u200c\u062a\u0631\u062a\u06cc\u0628 \u0634\u0627\u0631\u067e\u0646\u0633 \u0639\u06a9\u0633\u062a\u0627\u0646 \u0628\u0647\u200c\u0645\u0631\u0627\u062a\u0628 \u0628\u0647\u062a\u0631 \u062e\u0648\u0627\u0647\u062f \u0628\u0648\u062f.<\/p>\n

\u0641\u06cc\u0644\u062a\u0631\u0647\u0627\u06cc ND \u0628\u0647 \u062b\u0628\u062a \u0639\u06a9\u0633\u200c\u0647\u0627\u06cc\u06cc \u0628\u0627 \u0634\u0627\u0631\u067e\u0646\u0633 \u0628\u0627\u0644\u0627 \u06a9\u0645\u06a9 \u0634\u0627\u06cc\u0627\u0646\u06cc \u062e\u0648\u0627\u0647\u0646\u062f \u06a9\u0631\u062f.<\/div>\n

\u062a\u0627 \u0627\u06cc\u0646\u062c\u0627\u06cc \u06a9\u0627\u0631 \u062f\u0631 \u0645\u0648\u0631\u062f \u0641\u06cc\u0644\u062a\u0631\u0647\u0627\u06cc ND \u0628\u0627 \u062a\u06cc\u0631\u06af\u06cc \u062b\u0627\u0628\u062a \u0628\u062d\u062b \u200c\u06a9\u0631\u062f\u06cc\u0645. \u0648\u0644\u06cc \u0641\u06cc\u0644\u062a\u0631\u0647\u0627\u06cc ND<\/a> \u0627\u0646\u0648\u0627\u0639 \u062f\u06cc\u06af\u0631\u06cc \u0647\u0645 \u062f\u0627\u0631\u0646\u062f \u06a9\u0647 \u062f\u0631 \u0627\u062f\u0627\u0645\u0647 \u0628\u0647 \u0645\u0639\u0631\u0641\u06cc \u0648 \u0628\u0631\u0631\u0633\u06cc \u0622\u0646\u200c\u0647\u0627 \u062e\u0648\u0627\u0647\u06cc\u0645 \u067e\u0631\u062f\u0627\u062e\u062a:<\/p>\n

 <\/p>\n

\u0641\u06cc\u0644\u062a\u0631\u0647\u0627\u06cc ND Grad \u06cc\u0627 Graduated ND<\/strong><\/p>\n

\u0627\u06cc\u0646\u200c\u06af\u0648\u0646\u0647 \u0641\u06cc\u0644\u062a\u0631\u0647\u0627 \u062f\u0631 \u0648\u0627\u0642\u0639 \u0641\u06cc\u0644\u062a\u0631\u0647\u0627\u06cc ND \u0647\u0633\u062a\u0646\u062f \u06a9\u0647 \u062a\u06cc\u0631\u06af\u06cc\u200c\u0634\u0627\u0646 \u0627\u0632 \u06cc\u06a9 \u06af\u0648\u0634\u0647 \u0628\u0647 \u06af\u0648\u0634\u0647\u200c\u06cc \u062f\u06cc\u06af\u0631 \u0628\u0647\u200c\u0635\u0648\u0631\u062a \u062a\u062f\u0631\u06cc\u062c\u06cc \u06a9\u0627\u0647\u0634 \u0645\u06cc\u200c\u06cc\u0627\u0628\u062f. \u06a9\u0627\u0631\u0628\u0631\u062f \u0627\u0635\u0644\u06cc \u0627\u06cc\u0646\u200c\u06af\u0648\u0646\u0647 \u0641\u06cc\u0644\u062a\u0631\u0647\u0627 \u0628\u0631\u0627\u06cc \u062a\u0627\u0631\u06cc\u06a9 \u06a9\u0631\u062f\u0646 \u0622\u0633\u0645\u0627\u0646 \u0627\u0633\u062a. \u0627\u06a9\u062b\u0631 \u0627\u0648\u0642\u0627\u062a \u0631\u0648\u0634\u0646\u0627\u06cc\u06cc \u0622\u0633\u0645\u0627\u0646 \u0628\u0647\u200c\u0645\u0631\u0627\u062a\u0628 \u0627\u0632 \u0633\u0627\u06cc\u0631 \u0642\u0633\u0645\u062a\u200c\u0647\u0627\u06cc \u06a9\u0627\u062f\u0631 \u0639\u06a9\u0633 \u0628\u06cc\u0634\u062a\u0631 \u0627\u0633\u062a\u060c \u0628\u0646\u0627\u0628\u0631\u0627\u06cc\u0646 \u0628\u0627 \u062a\u0646\u0638\u06cc\u0645 \u0642\u0633\u0645\u062a \u062a\u06cc\u0631\u0647\u200c\u06cc \u0641\u06cc\u0644\u062a\u0631\u0647\u0627\u06cc Graduated ND<\/a> \u0628\u0631 \u0631\u0648\u06cc \u0622\u0633\u0645\u0627\u0646 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u06cc\u062f \u0628\u0647 \u0628\u0627\u0644\u0627\u0646\u0633 \u0645\u0646\u0627\u0633\u0628\u06cc \u0627\u0632 \u0646\u0648\u0631\u062f\u0647\u06cc \u062f\u0633\u062a \u067e\u06cc\u062f\u0627 \u06a9\u0646\u06cc\u062f. \u0628\u0647\u200c\u0637\u0648\u0631 \u0645\u062b\u0627\u0644 \u062f\u0631 \u0645\u0648\u0631\u062f \u0630\u06cc\u0644\u060c \u0639\u06a9\u0633 \u0633\u0645\u062a \u0686\u067e \u0628\u062f\u0648\u0646 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0641\u06cc\u0644\u062a\u0631 \u0648 \u0639\u06a9\u0633 \u0633\u0645\u062a \u0631\u0627\u0633\u062a \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u06cc\u06a9 \u0641\u06cc\u0644\u062a\u0631 Graduated ND \u06af\u0631\u0641\u062a\u0647 \u0634\u062f\u0647 \u0627\u0633\u062a:<\/p>\n

\"\"<\/p>\n

\u0641\u0644\u06cc\u062a\u0631\u0647\u0627\u06cc Variable \u06cc\u0627 \u0645\u062a\u063a\u06cc\u0631<\/strong><\/p>\n

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\u0641\u06cc\u0644\u062a\u0631\u0647\u0627\u06cc \u0645\u0631\u0628\u0639\u06cc<\/strong><\/p>\n

\u0641\u06cc\u0644\u062a\u0631\u0647\u0627\u06cc ND \u0628\u0627 \u062a\u06cc\u0631\u06af\u06cc \u062b\u0627\u0628\u062a \u0648 \u0641\u06cc\u0644\u062a\u0631\u0647\u0627\u06cc Graduated ND \u0631\u0627 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u06cc\u062f \u0628\u0627 \u0634\u06a9\u0644 \u0645\u0631\u0628\u0639\u06cc \u0646\u06cc\u0632 \u062e\u0631\u06cc\u062f\u0627\u0631\u06cc \u06a9\u0646\u06cc\u062f. \u0627\u06cc\u0646\u200c\u06af\u0648\u0646\u0647 \u0641\u06cc\u0644\u062a\u0631\u0647\u0627 \u0631\u0627 \u0628\u0627\u06cc\u062f \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0647\u0648\u0644\u062f\u0631<\/a>\u00a0\u0628\u0631 \u0631\u0648\u06cc \u0644\u0646\u0632 \u0646\u0635\u0628 \u06a9\u0646\u06cc\u062f. \u0645\u0632\u06cc\u062a \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0647\u0648\u0644\u062f\u0631 \u0648 \u0641\u06cc\u0644\u062a\u0631\u0647\u0627\u06cc \u0645\u0631\u0628\u0639\u06cc \u0627\u06cc\u0646 \u0627\u0633\u062a \u06a9\u0647 \u062e\u06cc\u0644\u06cc \u0631\u0627\u062d\u062a\u200c\u062a\u0631 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u06cc\u062f \u0686\u0646\u062f \u0641\u06cc\u0644\u062a\u0631 \u0631\u0627 \u0631\u0648\u06cc \u0647\u0645 \u0642\u0631\u0627\u0631 \u062f\u0647\u06cc\u062f. \u062f\u0631 \u0635\u0648\u0631\u062a\u06cc \u06a9\u0647 \u0627\u06af\u0631 \u0628\u062e\u0648\u0627\u0647\u06cc\u062f \u0686\u0646\u062f \u0641\u06cc\u0644\u062a\u0631 \u062f\u0627\u06cc\u0631\u0647\u200c\u0627\u06cc \u0631\u0627 \u0628\u0631 \u0631\u0648\u06cc \u0647\u0645 \u0646\u0635\u0628 \u06a9\u0646\u06cc\u062f \u0628\u0647\u200c\u0627\u062d\u062a\u0645\u0627\u0644\u200c\u0632\u06cc\u0627\u062f \u0628\u0627 \u0645\u0634\u06a9\u0644 Vignetting \u0645\u0648\u0627\u062c\u0647 \u062e\u0648\u0627\u0647\u06cc\u062f \u0634\u062f. \u0627\u0632 \u0637\u0631\u0641 \u062f\u06cc\u06af\u0631 \u0646\u0635\u0628 \u0648 \u062d\u0630\u0641 \u0641\u06cc\u0644\u062a\u0631\u0647\u0627\u06cc \u0645\u0631\u0628\u0639\u06cc \u0627\u0632 \u062c\u0644\u0648\u06cc \u0644\u0646\u0632 \u0628\u0633\u06cc\u0627\u0631 \u0631\u0627\u062d\u062a\u200c\u062a\u0631 \u0648 \u0633\u0631\u06cc\u0639\u200c\u062a\u0631 \u0627\u0646\u062c\u0627\u0645 \u0645\u06cc\u200c\u0634\u0648\u062f \u0648 \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u06cc\u06a9 \u0622\u062f\u0627\u067e\u062a\u0648\u0631 \u06cc\u0648\u0646\u06cc\u0648\u0631\u0633\u0627\u0644 \u062e\u0648\u0627\u0647\u06cc\u062f \u062a\u0648\u0627\u0646\u0633\u062a \u0622\u0646\u200c\u0647\u0627 \u0631\u0627 \u0628\u0631\u0627\u06cc \u0644\u0646\u0632\u0647\u0627\u06cc\u06cc \u0628\u0627 \u0633\u0627\u06cc\u0632 \u062f\u0647\u0627\u0646\u0647\u200c\u200c\u0647\u0627\u06cc \u0645\u062e\u062a\u0644\u0641 \u0628\u0647 \u06a9\u0627\u0631 \u0628\u06af\u06cc\u0631\u06cc\u062f.<\/p>\n

\"\"<\/p>\n

\u062f\u0631 \u0628\u06cc\u0646 \u0633\u0627\u0632\u0646\u062f\u06af\u0627\u0646 \u0641\u06cc\u0644\u062a\u0631\u0647\u0627\u06cc ND\u060c \u0628\u0647 \u062e\u0635\u0648\u0635 \u0627\u0646\u0648\u0627\u0639 \u0645\u0631\u0628\u0639\u06cc\u060c \u06a9\u0645\u067e\u0627\u0646\u06cc\u200c\u00a0Cokin<\/a>\u00a0\u0648 Nissi<\/a> \u0627\u0632 \u0634\u0646\u0627\u062e\u062a\u0647\u200c\u0634\u062f\u0647\u200c\u062a\u0631\u06cc\u0646\u200c\u0647\u0627 \u0627\u0633\u062a. \u0641\u06cc\u0644\u062a\u0631\u0647\u0627\u06cc \u0645\u0631\u0628\u0639\u06cc \u0627\u06cc\u0646 \u06a9\u0645\u067e\u0627\u0646\u06cc \u0627\u0632 \u062a\u0646\u0648\u0639 \u0632\u06cc\u0627\u062f\u06cc \u0628\u0631\u062e\u0648\u0631\u062f\u0627\u0631 \u0647\u0633\u062a\u0646\u062f \u0648 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u06cc\u062f \u0622\u0646\u200c\u0647\u0627 \u0631\u0627 \u062f\u0631 \u0627\u0628\u0639\u0627\u062f \u0645\u062e\u062a\u0644\u0641 \u0648 \u0628\u0627 \u062a\u0628\u062f\u06cc\u0644\u200c\u0647\u0627\u06cc \u06af\u0648\u0646\u0627\u06af\u0648\u0646 \u0648 \u062d\u062a\u06cc \u0628\u0647 \u0635\u0648\u0631\u062a \u06a9\u06cc\u062a<\/a> \u0646\u06cc\u0632 \u062e\u0631\u06cc\u062f\u0627\u0631\u06cc \u06a9\u0646\u06cc\u062f. \u0647\u0645\u0686\u0646\u06cc\u0646 \u0645\u0627 \u0628\u0647 \u0634\u0645\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0641\u06cc\u0644\u062a\u0631\u0647\u0627\u06cc ND \u0634\u0631\u06a9\u062a\u200c\u0647\u0627\u06cc Hoya<\/a> \u0648 Hama<\/a>\u00a0\u0648 \u062f\u0631 \u0633\u0637\u062d \u062d\u0631\u0641\u0647\u200c\u0627\u06cc \u062a\u0631 Rodenstock<\/a> \u0631\u0627 \u0646\u06cc\u0632 \u067e\u06cc\u0634\u0646\u0647\u0627\u062f \u0645\u06cc\u200c\u06a9\u0646\u06cc\u0645.<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

\u06cc\u06a9\u06cc \u0627\u0632 \u0645\u0647\u0645\u200c\u062a\u0631\u06cc\u0646 \u0648 \u06a9\u0627\u0631\u0628\u0631\u062f\u06cc\u200c\u062a\u0631\u06cc\u0646 \u0644\u0648\u0627\u0632\u0645 \u062c\u0627\u0646\u0628\u06cc \u0628\u0631\u0627\u06cc \u0639\u06a9\u0627\u0633\u0627\u0646 \u0648 \u0641\u06cc\u0644\u0645\u200c\u0633\u0627\u0632\u0627\u0646\u060c \u0641\u06cc\u0644\u062a\u0631\u0647\u0627\u06cc ND \u0647\u0633\u062a\u0646\u062f. \u0648\u0638\u06cc\u0641\u0647 \u0627\u06cc\u0646\u200c\u06af\u0648\u0646\u0647 \u0641\u06cc\u0644\u062a\u0631\u0647\u0627 \u06a9\u0627\u0647\u0634 \u0645\u06cc\u0632\u0627\u0646 \u0646\u0648\u0631\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0627\u0632 \u0644\u0646\u0632 \u0639\u0628\u0648\u0631 \u06a9\u0631\u062f\u0647 \u0648 \u0628\u0647 \u0633\u0637\u062d \u0633\u0646\u0633\u0648\u0631 \u0645\u06cc\u200c\u0631\u0633\u062f. \u0628\u06cc\u0634\u062a\u0631 \u0627\u0641\u0631\u0627\u062f \u0628\u0627 \u0639\u0645\u0644\u06a9\u0631\u062f 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