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[phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4752: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3823) [phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4754: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3823) [phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4755: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3823) [phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4756: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3823) Stockphotothailand ชุมชนคนขายภาพออนไลน์ เพื่อคนขายภาพถ่าย ภาพเว็คเตอร์ คลิปวิดีโอ ออนไลน์ • แสดงกระทู้ - ขอเรียนถามลุงไก่ amenic181 ครับ
เอามาให้ดูกันอีกทีครับ ภาพแรกและภาพที่สอง เป็น ไวโอลินวางอยู่บนพื้นไม้เก่าๆ ให้แสงหลักหรือ main light มาจากด้านหลัง ส่องผ่านกระดาษลอกลาย(tracing paper)
ภาพที่ 3 เอามาให้ดูใกล้ๆ นี้คือภาพที่เกิดจากไฟดวงเดียว ส่องผ่านกระดาษลอกลาย จำไว้นะครับ ต้องกำหนดไฟหลักหรือ main light ก่อน
ภาพที่ 4 เมื่อกำหนดไฟหลักหรือ main light ได้แล้ว ตอนนี้ก็ต้องเพิ่ม fill light fill light จะทำหน้าที่ เพิ่มรายละเอียดของภาพที่ขาดหายไป หรือ เพื่อทำให้เงาที่เกิดจาก main light น้อยลง ในภาพที่ 4-5-6 ได้นำแผ่น ฟิวเจอร์บอร์ด มาตั้งไว้ด้านหน้าแล้วยิงแฟล็ชใส่ฟิวเจอร์บอร์ด ให้สะท้อนแสงออกมา แสงสะท้อนจากฟิวเจอร์บอร์ดนี้ เราเรียกว่า fill light fill light ต้องไม่แรงกว่าแสงที่มาจาก main light เพราะทำหน้าที่แค่เพิ่มลายละเอียดส่วนที่หายไป fill light จะมีมากกว่าหนึ่งก็ได้ แค่เอากระดาษขาว,โฟมขาว,ฟิวเจอร์บอร์ดขาว มาตั้งสะท้อนแสงจาก main light กลับไป บางครั้งก็เพียงพอแล้ว
เปรียบเทียบภาพ
ภาพนี้แสงมาจาก main light ผ่านกระดาษลอกลาย
ภาพนี้เพิ่มแสง fill light ด้านหน้าเพื่อให้เห็นลายละเอียดเพิ่มขึ้น