COPYRIGHT © 2013 RED.COM, INC
RED DSMC OPERATION GUIDE
955-0020_V5.1, REV-D | 50
F STOP
The aperture controls the depth of field of the subject imaged by the camera, and in combination with the shut-
ter speed/angle setting controls the amount of light falling on the sensor, which is the exposure.
Increasing the F stop to a higher number reduces exposure as well as increases the depth of field. Decreasing
the F stop to a lower number increases the exposure and decreases the depth of field.
You can chose either 1/3 or 1/4 stops.
RED DSMC TI PL MOUNT INSTALLED
When a lens equipped with Cooke’s S4/i system is attached to the DSMC TI PL Mount, the camera displays the
current aperture (F stop) of the attached lens.
DSMC NIKON MOUNT AND CANON MOUNT INSTALLED
The F-stop menu appears when a DSMC Nikon Mount, DSMC Canon Mount, or DSMC Canon MOTION MOUNT
is installed with a supported lens.
This adjusts the aperture (F stop) of the attached lens.
Select the Advanced... button to access the Settings > Setup > Lens screen. For more information about the
advanced focus settings, go to “Autofocus Modes (DSMC Nikon and Canon Mounts)” on page 98.
EXPOSURE
Select the exposure of each frame captured by the sensor. Shutter speed presets are provided for all common
speeds (and shutter angles) for 24/25 FPS and 50/60 FPS project frame rates.
Decreasing shutter speed increases the amount of time during which light falls on the sensor, increasing expo-
sure and motion blur on any objects moving within the frame. Increasing shutter speed shortens the amount of
time during which light falls on the sensor, decreasing exposure and motion blur on objects moving within the
frame.
From the Exposure menu, you can set the exposure value as a shutter speed (1/xx sec) or a shutter angle (xx
degrees). For more information on how to change whether shutter or shutter angle displays, go to “Display
Modes” on page 61.
If the camera is able to achieve the target exposure, the exposure value displays in white. If the camera is un-
able to achieve the target exposure, the exposure value displays in yellow.
Select the Advanced... button to access the Settings > Project > Exposure screen. For more information about
these settings, go to “Exposure” on page 61.
NOTE: If the camera ramps to a frame rate that it cannot maintain with the exposure setting, the camera changes
the exposure to the longest exposure possible for the frame rate. To maintain consistent exposure throughout
the recording, select an exposure that is valid at all ramp target frame rates. For more information on speed
ramp mode, go to “Speed Ramp Mode” on page 75.
EXPOSURE (SHUTTER SPEED)
Enter the exposure value as a shutter speed (1/xx sec).
With the exception of EPIC DRAGON, the slowest available speed is 1/frame rate, so for 24 FPS, the slowest
speed is 1/24 sec. In EPIC DRAGON, the slowest available speed is 1/8 sec, regardless of the sensor frame
rate.
Default is 1/48 sec.
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