Author Topic: Prevent auto-off LiveView without Sticky HalfShutter  (Read 3131 times)

bart1983

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Prevent auto-off LiveView without Sticky HalfShutter
« on: September 24, 2015, 01:24:03 PM »
Hey guys,

I am a wedding photographer and I want to make a photo booth for my wedding guests. It includes a box, a Canon 50d and a HDMI LCD display. But when I activate the liveview to see something on the HDMI display the liveview turns off after nearly 30 minutes. The sticky HalfShutter option helps to prevent that. But after taking a photo, the shutter button must be pressed to half again to activate the sticky HalfShutter. I can not say to all the guests that they have to activate the HalfShutter after taking some photos.

Pressing the HalfShutter button is no solution, too. Because after taking a photo the token picture would not be shown on the display.

Maybe it would work with short HalfShutter impulses every 10 Minutes?

Bart

Marsu42

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Re: Prevent auto-off LiveView without Sticky HalfShutter
« Reply #1 on: September 30, 2015, 10:12:20 AM »
Maybe it would work with short HalfShutter impulses every 10 Minutes?

In that case, did you try to merge the recent lua scripting branch and use a script that does this? I know it involves some work atm, but this sounds like a prime example for simple user scripting "press button x, wait y, repeat".

dmilligan

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Re: Prevent auto-off LiveView without Sticky HalfShutter
« Reply #2 on: September 30, 2015, 04:41:08 PM »
Emulated software button presses do not prevent LV from going idle (only real physical button presses, Canon firmware knows the difference somehow). There is a Canon property that does though, which is how raw recording for more than 30 mins (or for longer than the camera auto-power-off setting if it's set to < 30 mins) was achieved. I don't remember the exact property off the top of my head, but you can check the merged PR queue, there should be one in there about raw recording and auto-power-off.