Eyeon:Manual/Tool Reference/Film/Cineon Log
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Film Tools |
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Cineon Log |
Cineon Log [Log] | |
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The Cineon Log Tool is used to convert image data from logarithmic to linear. Use this tool the log-lin conversion was bypassed in a Cineon Loader to return processing to Linear. For additional details on the Cineon Log file format, consult the chapter entitled Film In Fusion. |
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Controls Tab
These buttons offer two options, one for converting log images to linear and one for converting linear images to logarithmic.
When selected, the settings in this tab will affect all of the color channels equally. De-select this control to convert the Red, Green and Blue channels of the image using separate settings for each channel.
Use this control to set the black point and white point in the log image before converting. Pixels with values in log space below the Black Level will become out of range values below 0.0. Pixels with values above the White Level will become out of range values above 1.0 after conversion.
When processing in floating point color space, the out of range values stored in the Cineon format are preserved through the conversion. In 16 bit or 8 bit mode the out of range values are clipped.
The Soft Clip control is used to draw values that are out of range back into the image. This is done by smoothing the conversion curve at the top and bottom of the curve, allowing more values to be represented.
Applying a soft clip of any value other than one will immediately cause the tool to process at 16 bit integer, eliminating all out of range values that do not fit within the soft clip.
These controls are used to set the response curves of the logarithmic data during conversion. In addition to the settings above, a custom ASCII file Look Up Table can be created with specific conversion values. The ASCII LUT file can be loaded using the file folder icon button.
A description of the ASCII LUT format can be found in the appendices.
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