Photoshop Image Processing Henry C Ng Feb 1

數碼攝影黑房程序 (Photoshop Image Processing) 吳振亨 (Henry C. Ng) Feb 1, 2015

Content n n 攝影道德 （Photography Ethics) 顏色管理 （color management) 電腦顯屏幕色彩校正 (monitor screen color calibration) 數碼攝影黑房程序 (Photoshop Image Processing) • RAW圖像處理 (raw image processing) • Photoshop 運作

顏色管理 (Color Management) Henry C. Ng Feb 1, 2015

顏色問題 顏色 Video Demo (Show 02_Color. Basics. swf)

電腦顯屏幕色彩校正 (monitor screen color calibration) 顏色 Video Demo (Show 02_Color. Basics. swf)

色彩校正 (Color calibration)

數碼攝影黑房程序 (Photoshop Image Processing)

直方圖 (histogram) 用途 n 215 What it means: the number of pixels in the picture that has the same tone value 135 35 215 135 215 Black 0 35 135 215 White 254

直方圖 (histogram) 用途 n 215 What it means: the number of pixels in the picture that has the same tone value 135 35 215 135 215 Black 0 35 135 215 White 254

直方圖 (histogram) 用途 n What it means: the number of pixels in the picture that has the same tone value Black 0 White 254

直方圖 (histogram) 用途 n What it means: the number of pixels in the picture that has the same tone value Combine Channel Red Channel Green Channel Blue Channel Black (0, 0, 0) White (254, 254)

直方圖 (histogram) 用途 n n By looking the histogram, we can find out whether the image information is fully captured. If there is clipping, that means some of the image information was not captured. 暗層位 圖像光位

Digital image file format n n n JEPG TIF or TIFF GIF Raw Etc.

數碼攝影黑房程序 (Photoshop Image Processing) n 第一步: RAW圖像處理 (raw image processing) n 第二步: Photoshop 運作

第一步: RAW圖像處理 (raw image processing) n n n 色温（white balance) 校正 圖像對比度 (image contrast) 圖像光位和暗層復甦 （image highlight and shallow recovery) 黑位白位調整 影像噪音粒 減除（image noise reduction) JPEG, TIF file RAW圖像處理

第二步: Photoshop 運作

Discussion

直方圖 (histogram) 用途 n What it means: the number of pixels in the picture that has the same tone value Black (0, 0, 0) White (254, 254)