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How to Use the Canon Camera Shutter in FMX for Windows

Updated Today · 4 min read

A compatible Canon camera’s physical shutter button can act as the capture action in FMX for Windows. This is useful for photographer-operated booths, roaming installations, or an experience where the guest presses the real camera instead of an on-screen button.

When the shutter is pressed, the camera takes the photo and FMX receives it as a Raw Photo. You do not need to add a Take Photo step to the workflow.

Important: A Take Photo step is not recommended for a physical-shutter workflow. The physical shutter already creates the photo. Adding Take Photo can ask FMX to trigger another software capture and may produce an extra photo or make the workflow order unclear.

Physical shutter capture requires a supported Canon camera selected in FMX. Workflow Builder Test Mode does not simulate a real Canon shutter press.

Before You Start

  • Connect the Canon directly by USB.
  • Select it under Global Settings > Camera.
  • Use a supported shooting mode and JPEG or JPEG+RAW output.
  • Disable camera Wi-Fi and close Canon utilities that could claim the USB connection.
  • Confirm the camera is detected and that FMX can receive a test image before testing the complete workflow.

For general preparation, see Camera Setup and Configuration.

Build the Recommended Workflow

Use a Raw Photo Preview as the point at which the workflow waits for and displays the physical-shutter capture.

A simple workflow is:

Touch to Start → optional Live View or instruction → Preview: Raw Photo → Save Final Photo → sharing or printing

Configure it as follows:

  1. Add any guest instructions, countdown, or Live View steps needed before capture.
  2. Add a Preview step and set Preview Type to Raw Photo.
  3. Do not add a Take Photo step to this capture path.
  4. Connect Next from Preview to Save Final Photo, sharing, printing, or the next intended step.
  5. If Retake is enabled, route Retake back to the instruction or Raw Photo Preview section so a new physical shutter press can replace the rejected photo.

During the experience:

  1. Let the workflow reach the Raw Photo Preview section.
  2. Press the Canon camera’s physical shutter once.
  3. The camera captures the image and FMX downloads it.
  4. FMX registers the image as the current Raw Photo and displays it in Preview.
  5. The guest accepts the photo and continues through the normal workflow route.

The shutter supplies the image; the workflow edges still control navigation.

Multiple Photos in One Workflow

For a two-photo experience, repeat the instruction and Raw Photo Preview section without adding Take Photo:

Instruction 1 → Raw Photo Preview 1 → Instruction 2 → Raw Photo Preview 2 → Save Final Photo

Press the physical shutter once for each matching Preview section. Wait for FMX to finish downloading and displaying the first photo before moving to the next capture.

If each result should be a separate FMX session, add End Session boundaries. See How to Use the End Session Node.

Camera Settings and Overrides

When Override Camera Settings is enabled, FMX applies the saved Canon settings supported by that body. These can include ISO, aperture, shutter speed, white balance, image quality, Picture Style, saturation, and white-balance shift.

Test the exact override configuration with the physical shutter. A property that the connected Canon does not support should remain unavailable rather than being forced.

Test the Workflow

  1. Turn off FMX Test Mode.
  2. Start the event with the Canon connected and selected.
  3. Confirm there is no Take Photo step on the physical-shutter path.
  4. Reach the Raw Photo Preview section.
  5. Press the Canon shutter once.
  6. Confirm that one Raw Photo is created and displayed.
  7. Complete Save Final Photo, sharing, and printing.
  8. Repeat the workflow for a new guest session.

Troubleshooting

Pressing the shutter does nothing

  • Confirm that the selected camera is the capture-ready Canon entry.
  • Turn off Test Mode.
  • Close EOS Utility or other Canon software.
  • Check the USB cable, camera mode, memory card, and image quality.
  • Confirm the Canon can capture to its memory card and that FMX detects the camera.

Two photos are captured

  • Remove any Take Photo step from the physical-shutter path. It is unnecessary and can request an additional software capture.
  • Press the physical shutter only once and wait for FMX to finish downloading the image.

Preview remains empty

  • Set Preview Type to Raw Photo.
  • Remove Take Photo from the physical-shutter path.
  • Make sure Screen Capture does not appear earlier on the same path.
  • Confirm that a real Canon body shutter—not Test Mode—creates the photo.

The wrong Raw Photo is used

Avoid additional shutter presses after the final planned Raw Photo Preview. A later physical capture can update the latest Raw Photo instead of advancing an unrelated node.

Camera overrides cause capture failure

Update FMX to the latest 2.0 release, then disable Override Camera Settings for one controlled test. If capture works, re-enable it and verify each saved property against the connected Canon model.

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