2017

Gamma Curve box Set the value of the output gamma curve that is applied to the imported clips. Selecting
Scene Linear (16bit fp) implicitly sets the Bit Depth to 16-bit floating point. If you set HDRx Settings to High
Dynamic Range, HDRx clips are imported as Scene Linear, ignoring the Gamma Curve setting. If set to Linear,
the ISO, Exposure, Brightness and FLUT controls, in the Image menu, are disabled.
Disabled when Colour Space is set to ACES.
HDRx Settings box Select which track of a RED HDRx file to import, or how to merge the two tracks together.
A RED HDRx media file is made of two tracks, track A (the main exposure) and track X (the highlight
protection exposure). Use HDRx Settings to set how you want to use those two tracks.
To have:Select:
Only the main exposure (A track).Primary Exposure
Only the highlight protection exposure (X track).Highlight Exposure
A single clip resulting from blending together the Primary and Highlight tracks.
Blend Exposures behaves similarly to the option of the same name found in
REDCINE-X by RED.
Use the Blend field to set the blend value to use.
Blend Exposures
A single clip resulting from the merge of the Primary and Highlight tracks using
an algorithm provided and developed by RED. This algorithm tries to match
and blend together the motion blurs of the two tracks.
Magic Motion
A single clip resulting from the merge of the Primary and Highlight tracks using
an HDR merging algorithm developed by Autodesk. It converts the two exposures
into a single 16-bit float image.
Importing an HDRx clip as High Dynamic Range forces the Bit Depth of the im-
ported clip to 16-bit floating point, and the Gamma Curve to Scene Linear.
High Dynamic Range
Use the Blend, Highlight Threshold, and Exposure Offset fields to refine the
blend.
A clip using blending options read from the RMD file. If there is no RMD file,
the Smoke loads the main exposure (A track).
RMD
Blend field Set how to blend the two exposures of a RED HDRx clip.
With HDRx Settings set to Blend Exposures, this field behaves like the blend in REDCINE-X; the blend also
attenuates the artifacts created by the scene operation, which is a blend of the two exposures: -1 shows only
the Highlight (X frame), 1 only the Primary (A Frame), and 0 a 50-50 mix.
With HDRx Settings set to High Dynamic Range, Blend also attenuates the artifacts created by scene motions;
set to 1 unless you are troubleshooting motion artifacts.
Highlight Threshold field Set the threshold when pixels from the Highlight exposure are used instead of
the over-exposed pixels from the Primary exposure. Only available when HDRx Settings box is set to High
Dynamic Range. Set Highlight Threshold last because import options such as ISO or FLUT lighten or darken
the image. Too high and you get clipping (often including a magenta-coloured cast), too low and the midtones
and shadows have noise leaking in from the Highlight track.
Exposure Offset field Set how much greater the Primary exposure was when compared to the Highlight
exposure, in units of stops. Only available when HDRx Settings box is set to High Dynamic Range. The
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