Bedienungsanleitung Red Epic - 4.0 2013 (Seite 14 von 250) (Englisch)

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RED EPIC OPERATION GUIDE

955-0002_v4.0, Rev-A | 14

The camera’s monitoring path converts RAW sensor data to a white balanced 12-bit depth 2048 x 1080 pixel

RGB 4:4:4 video signal. This signal may be modified using ISO, White Balance or other RGB color space

adjustments as desired by the operator, and is then scaled and gamma corrected to provide VIEWFINDER,

HD-SDI and HDMI monitor outputs at 10-bit depth in 4:2:2 YCC or 8-bit depth in 4:4:4 RGB.

Frame guides and other camera data may be added as desired by the user to one or more of the outputs.

NOTE: The supplied REDCINE-X® PRO application software can create and export .RMD “color look” files

which may then be imported as camera monitor path color processing PRESETs. This information is stored

as reference metadata, so that this color processing choice can be the default value used in Post-

production. Refer to SECONDARY MENUS > PRESETS for details how to import and apply .RMD file

metadata.

HDRX™

HDRx is an option for extending dynamic range up to 6 stops over the base Dynamic Range offered by the

camera. When enabled HDRx simultaneously shoots two images of identical resolution and frame rate - a

normally exposed primary track (A-track), and an underexposed secondary track (X-track) whose exposure

value reflects the additional stops of highlight protection desired.

For example, if you select an HDR value of +2 and your primary track exposure is 1/48th sec, the secondary

track exposure will be 2 stops under, or 1/192 sec. The ISO and Aperture remain the same for both

exposures.

During acquisition and recording, the two tracks are "motion-conjoined", meaning there is no gap in time

between the two exposures. This is very important to note because if they were traditional alternating

exposures, there would be a time gap between the two tracks that would show up as an undesirable motion

artifact. Both tracks (A & X) are stored in a single .R3D

file.

Since there are two exposures in HDRx mode, the camera is recording double the amount of frames each

second. For example, when shooting at 24fps, the camera is recording two 24fps tracks, which is the data

rate equivalent of 48fps; however after combining the A and X tracks in post-production you will see only

one 24fps blended image sequence.

HDRx provides multiple options for exploitation in post-production.

Blend the two tracks in post tools like REDCINE-X, Storm or any other application that supports the SDK to

create Magic Motion™. This blending of the two tracks comes with a slider so you can decide just how much

of each track you want to use. A preview window shows you the combined result of your selection, or you

can view each track individually.

Combine the two tracks using MNMB (More Normal Motion Blur). MNMB is designed to emulate the motion

of a traditional camera with full motion blur. This is a tool created by The Foundry that uses a new motion

estimation algorithm designed specifically for HDRx. The shorter exposure (sharper image) is blended to

match the motion blur of the normal exposure. Again, a preview window shows the combined result of your

selection, or you can view each track individually.

Use the X-track data for motion tracking, then combine the X-track with the A-track, or just motion stabilize

the A-track using the motion analysis data extracted from the X-track.

Exporting to EXR file format will give you a multi-view EXR with both exposures (like a stereo EXR).

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Red Epic - 4.0 2013 Seite 14

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