Feature "Use Autofocus" breaks Intervalometer, Audio remote, Motion Detection after focus failed

Issue #2923 new
Walter Schulz
created an issue

Reproduceable with 7D and 650D with different lenses (EF-S 10-18 STM, EF-S 18-55 IS II, EF 100/2.8 Macro USM (without L)

a) Motion Detection

  1. Use Autofocus ON
  2. Enable Motion Detection with default option
  3. Make sure to have cam directed to a well lit area able to focus.
  4. Leave menu by half-shutter press. Cam will enter Liveview mode
  5. Place an opaque object in front of lens. Distance < minimal focus distance. Give cam enough time to give up on focus.
  6. Remove object.

If there is no error, repeat steps 5 and 6.

7D's reaction: Shoot like crazy, burst mode (7D.206 running dfort's build)
Confirmed by user critix running 500D (latest nightly).

650D's reaction: AF will not work anymore. No pic will be taken by Motion Detect.
ML version: Nightly.2018Nov20.650D104 Changeset 565ee36ef132+ (100D_merge_fw101)

b) Audio Remote Shot

Follows the same rule if trigger condition is met.

Not tested with 500D.

c) Intervalometer

Follows the same rule. Tested with Half-Shutter release in Intervalometer

7D will going crazy mode again

Not tested with 500D.

650D behaves different. Screen will be frozen Canon's "Q"-view. Pics will be taken by full press, but no reaction on half-shutter, set, info, menu buttons.

Comments (3)

  1. Alex

    Thanks, will check.

    The funny part is that I've used the motion detection feature to catch some birds during holidays, and it worked out of the box. I had a manual lens, though.

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