SMPTE CamBook® 3 | SMPTE

SMPTE CamBook® 3

SMPTE CamBook 3 is a precision tool designed to help optimize image quality in: Engineering Align and set up cameras to REC 709 Compare/match camera makes, models Test lenses for colorimetry and resolution Production Select the best camera for the job Use as an on-the-set reference Color correct images in post SMPTE CamBook 3 includes a number of popular DSC test elements:

1. CamAlign® colorbar/grayscale with “SpectroGray” patented spectrophotometrically neutral grayscale, 12 chip colorbar with four standard skin tones, resolution trumpets and both 16 x 9 and 4 x 3 framing lines. The colorbar features DSC’s easy to use “in-the-boxes” vector colors, plus six equally spaced intermediate colors and skin tones. Following good engineering practice, colors are mid-saturation, producing RGB waveform levels that track uniformly when adjusting vectorscope gain.

2. Three useful “matte” reference chips - 18% gray , DSC Warm and 90% CamWhite. 18% gray - All DSC gray cards and grayscales use DSC’s patented "SpectroGray" process to produce spectrophotometrically neutral gray tones. This is important because other look-alike products typically have a yellow cast which, when normalized in a camera, produce images having a blue color bias. This can degrade a production, because it produces cold looking images and viewers typically prefer a warm look. Placing this 18% "SpectroGray" chip at your preferred mid-gray reference point (usually around 40 IRE - 280mV, but can vary based on taste, camera manufacturer or DP preference) helps to ensure that mid-tones, such as skin, are rendered accurately. DSC Warm - There are times when the main object in a scene is a person and you want to give them a `healthy` looking glow, then white balancing to a CamWarm will do the trick without resorting to a bulky matte box and image degrading filters. CamWarms help video crews reduce set-up time for shoots while improving the production value of their images. DSC CamWhite - white balancing cameras to a ``CamWhite`` lit by the scene’s primary light source is one of the keys to color reproduction excellence.

3. DSC BackFocus Pattern - Clients say that the unique "bow-tie" double stars speed back focus adjustment accuracy by popping into focus more easily. Exceedingly high dynamic range, brilliant white and dense black targets simplify setting critical focus in center and edges. Includes framing for 16:9 and 4:3 plus 1.85 and 2.35 digital film formats.

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