Use Autofocus Modes

When supported lens mounts and lenses are attached, autofocus modes display in the Mode drop-down menu. Although the camera supports autofocus, RED recommends using these autofocus modes only as focus assist tools. Performance may vary from lens to lens. For optimal focus accuracy, use manual focus.

Autofocus Requirements

Autofocus modes are available (in the Mode drop-down menu) in any of the following situations:

  • A DSMC S35 Nikon Mount and a supported lens is attached. The lens focus switch is set to “A” or “M/A”.
  • A DSMC Canon Mount and a supported lens is attached. The lens focus switch is set to “AF”.
  • A DSMC RED MOTION MOUNT S35 Ti Canon (Captive) lens mount and a supported lens is attached. The lens focus switch is set to “AF”.
Autofocus Modes
  • Single: When you press the key mapped to AF: Start, the camera performs single-shot AF. Optimized for rapid focus even in low-contrast conditions. Works with Center and Spot zones.
  • Continuous: When you press the key mapped to AF: Start, the camera attempts to keep objects in the target in focus. Works best with good lighting and contrast. Works with Center and Spot zones.
  • Touch Track: Dynamically updates a positionable AF point using the touchscreen. Works with Spot zone. Keep the target on the subject while moving it across frame, since the lens continuously focuses on that target.
  • Rack: Enables rack focus. Works with Spot zone. For more information, go to Rack Focus.

NOTE: Press the key mapped to AF Mode: Cycle to cycle through the autofocus modes.

Autofocus Performance

Autofocus performance may be reduced in the following conditions:

  • Subject is too dark or distant.

  • Subject is too bright or close.

  • Inadequate contrast between the subject and background.
  • Inadequate surface contrast or detail.
  • Scene has reflective highlights.
  • Subject is backlit.

NOTE: Use Edge mode for assistance in these conditions. For more information, go to False Color Modes: Edge.