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數位影片製作 攝影機 PowerPoint PPT Presentation


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數位影片製作 攝影機. 電影影片格式. 格式 電影影片格式 見圖 3-2 。 類比電子影像格式 數位電子影像格式 高解像度電子影像格式. 電影影片格式. 最原始的電影影片格式是 35mm ,由愛迪生 (Thomas Edison) 和伊士曼 (George Eastman) 所發明的,和當今各戲院所使用的影片格式基本上是相同的。 在影片兩側有片孔 (perforations,sprocket holes) ,大部分區域是影像使用,也就是畫框 (frame) , 每秒使用 24 格 畫格;之後的聲音軌,也很快就標準化。.

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數位影片製作 攝影機

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      • 3-2


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35mm(Thomas Edison)(George Eastman)

(perforations,sprocket holes)(frame)24


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1920(Eastman Kodak)16mm

70mm


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01

()

(sample)


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(pixel)(horizontal resolution)(vertical resolution)

VSH200480

Hi-8400480

Mini DV720480

24P1,9201,080

35mm4,0003,000


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2.35:1


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(academy ratio)1.3318mm16mm35mm

(letter box)1.331(pan and scan)


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HDTV1691.78143169


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(polyester)()(dropouts)


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CCDCCD(chip)(pixel)

CCD(prism)


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(time code)(address number)SMPTE01021510121510

(vertical blanking interval)


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(slate)


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(white balance)


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-

(gain)()+9dB(decibel)+18dB

0dB3dB6dB9dB12dB15dB18dB

*9dB


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4 8 15 30 60 90100125 180 250 350 500 725100010000

S

*41/481/8100001/10000


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(aperture)(diaphragmiris)(f-stop)


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1.422.845.681116222(square root)f/8f/5.6f/11f/16

f 1.6f 2f 2.4f 2.8f 3.4f 4 f 4.8 f 5.6 f 6.8

f 8 f 9.6 f 11

*ff


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(lens hood)CCD


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(zoom lens)(variable focal length lens)

(fixed lensprime lens)


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(focal length)25mm50mm

10mm100mm

50mm25mm100mm50mm


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511015120mm100mm10120mm200mm


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(telephoto)(normal)(wide-angle)


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(macro)()(digital zoom)(optical zoom)

25mm50mm


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(focus)

(auto focus)


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f/1.2f/2

f/1.4f/4


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(depth of field)()()

( )


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()f/22f/2.8


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