NAC Image Technology SP-642, Руководство пользователя

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■ DRES Mode (Dynamic Range Expansion)
If the DRES mode (dynamic range expansion shutter mode) is used on the HX, GX cameras, the
camera sensor compresses the high luminance areas and the dynamic range can be expanded.
Any of the following can be used to select the DRES Mode.
・
Select " DRES Mode " in the "Control" window.
・
Select " DRES Mode " in the “Camera Details” dialogue.
・
Select " DRES Mode " from the "Recording Parameters" in the “List of Camera Settings”
window.
GX Cameras HX Cameras
Any of the following can be used to select the DRES Mode.
OFF Sets the dynamic range to approximately 200%. Normal setting.
LOW Sets the dynamic range to approximately 400%.
MID Sets the dynamic range to approximately 800%.
HIGH Sets the dynamic range to approximately 1600%.
CUSTOM Custom setting for the dynamic range (only HX cameras)
If the DRES mode is enabled, the “Gain” and “Knee” settings are not applied, the gain will be
LOW and the knee will be OFF.
・
LOW
，
MID
，
HIGH
In the DRES mode with photographed or downloaded MCFF data, set the image quality
luminance properties to LINEAR, and if converted to TIFF16 (Monochrome 16bit) / TIFF48
(48bit), it is possible to return the luminance compressed for dynamic range expansion to the
current luminance data and output to a TIFF file (Monochrome 16bit / TIFF48). Refer to page
5-26 for details.
When the “Frame Straddling” function is disabled in the HX camera and GX-8, the AE
mode settings are disabled and the DRES mode is turned OFF.
Since the DRES mode presumes luminance during single frame exposure will not have
much change, there is no dynamic range expansion effect with instantaneous laser
illumination photography such as that with frame straddling.
Caution