Apple Color 1.5 - Manual (Page 255)

• REDlog: A nonlinear, logarithmic gamma setting that maps the native 12-bit RED
image data to a 10-bit curve. The blacks and midtones that occupy the lowest 8 bits
of the video signal maintain the same precision as in the original 12-bit data, while
the highlights that occupy the highest 4 bits are compressed. While this reduces the
precision of detail in the highlights, this is a relative loss as the linearly encoded data
has an overabundance of precision.
• PDLOG 685: Another logarithmic gamma setting that maps the native 12-bit RED
image data into the linear portion of a Cineon or film transfer curve.
• Color Space pop-up menu: These options are available in the RED Camera’s View menu.
(In-camera, these options are tied to corresponding gamma settings.)
• CameraRGB: Identified on the camera as RAW, this mode bypasses the RED camera
matrix and represents the original, uncorrected sensor data.
• REDspace: Fits the raw RED image data into a color space that’s larger than that of
Rec. 709. Appropriate for digital cinema mastering and film output.
• Rec. 709: Fits the raw RED image data into the standard color space specified by the
Rec. 709 standard for high definition video. Appropriate for HD video mastering.
• ISO pop-up menu: A gain operation (similar to Exposure), which pins the black point at
0 while raising or lowering the white point of the image, linearly scaling everything in
between. The range is 100–2000; 320 is the default unity gain setting (no change is
made). Raising the signal too much can result in clipping.
Important: Changing the ISO setting of your RED camera does not alter the recorded
data. However, since it changes the lightness of the image you’re monitoring during
the shoot, it will influence how you light the scene and adjust the camera’s iris.
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