How to set the shutter mode on the EOS 1Dx Mark III.

Article ID: ART176318 | Date published: 02/03/2020 | Date last updated: 02/25/2020


Setting the shutter mode (Mechanical vs Electronic, Curtain) on the EOS 1Dx Mark III.


Shutter Mode

Shutter Mode

You can choose the method of shutter release.

  1. Select [Shooting: Shutter mode].

  2. Select an option.

  • Mechanical

    Shooting activates the mechanical shutter. Recommended when shooting with the aperture of a bright lens wide open.

  • Elec. 1st-curtain

    Shooting only activates the second-curtain shutter. The shutter is quieter than with [Mechanical].

  • Electronic

    Enables you to shoot without a shutter sound.

    In continuous shooting, the camera always shoots at high speed (up to approx. 20 shots/sec.). Also during continuous shooting, the white frame is displayed repeatedly.


  • Defocused image areas may be incomplete when shooting near maximum aperture at high shutter speeds, depending on shooting conditions. If you dislike the appearance of defocused image areas, shooting as follows may give better results.

    • Shoot with an option other than [Elec. 1st-curtain].
    • Lower the shutter speed.
    • Increase the aperture value.
  • Precautions when set to [Electronic]

  • Be responsible when using electronic shutter, and respect subject privacy and portrait rights.
  • Some restrictions on shutter speed apply. Shutter speeds slower than 0.5 sec. are not available.
  • The continuous shooting speed may become slower depending on the shooting conditions.
  • In shots of fast-moving subjects, the subject may be distorted, or in continuous shooting with Servo AF, shots may be out of focus.
  • With some lenses and under some shooting conditions, lens focusing and aperture adjustment may be audible.
  • Bands of light may be displayed and captured images may be affected by light and dark banding if you shoot with electronic shutter during flash firing by other cameras or under fluorescent lighting or other flickering light sources.
  • Zooming during continuous shooting may cause changes in exposure even at the same f/number. For details, refer to the Canon website.
  • [Elec. 1st-curtain] is used for bulb exposures.
  • AEB shooting and flash photography are not available.
  • Some functions will be restricted, but you can return to shooting with previous settings by switching to a setting other than [Electronic] or switching to viewfinder shooting.




Rate this Article
Was this article helpful?
Yes, This document is helpful
No, This document needs a clearer explanation
Please provide your comments