Chup hinh hoa - Chp hnh hoa bng my k thut s Chng Mt Hnh r...

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Ch p hình hoa b ng máy k thu t s Ch ươ ng M t - Hình rõ nét Dùng chân ch ng, đầ u xoay và dây b m m m lo i t t Nh t t c ơ ph n ch ng rung khi x d ng chân ch ng. Ch dùng c ơ ph n ch ng rung khi c m máy. Vùng rõ nét nh t c a ng kính = 2 kh u độ , nh h ơ n kh u độ l n nh t. Thí d ng kính 2.8 thì vùng rõ nét là 5.6 cho t i 8.0 Dùng ng kính t t và đắ t ti n - thí d : Canon EF 24-70mm F2.8 Ph i dùng chân ch ng trong tình tr ng thi ế u ánh sáng - Đừ ng t ă ng ISO vì t ă ng ISO s làm t ă ng s lo n s c. Khi không th dùng chân ch ng, ph i dùng Th i Ch ế (mode TV) và t ă ng ISO lên cao cho V n t c ngang v i chi u dài c a tiêu c . Thí d : Tiêu c dài 180mm - v n t c = 1/200 Phóng đạ i màn hình LCD c a máy nh để ki m soát s s c nét S d ng Photoshop để làm hình rõ nét Filter> Sharpen> Unsharp mask filter:
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Amount Radius Threshold Ng ườ i 150% 1 10 Thành ph 65% 3 2 Thông th ườ ng 85% 1 4 Chú thích: Mu n làm cho hình đượ c rõ nét, dân chuyên nghi p dung m t công c tên là "Unsharp mask", th t là bí m t!
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  • Summer '14

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Christopher Reinemann
"Before using Course Hero my grade was at 78%. By the end of the semester my grade was at 90%. I could not have done it without all the class material I found."
— Christopher R., University of Rhode Island '15, Course Hero Intern

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