#181 Consider shutter lag for burst mode interval

[Michael von Glasow]

First of all, great app – finally a camera app that will work for time-lapse photography!

I tried to take pictures for a time-lapse movie with OpenCamera today, using the Burst Mode feature. It was shortly after sunset, I had selected ISO 200 and set the burst mode interval to 3 seconds. However, the actual delay between shots was in the 5–6 second range, apparently due to shutter lag and possibly internal processing. Automatic ISO did not appear to suffer from this, but I wanted a low ISO to get more pronounced blur effects. With ISO 100 there is an even longer delay, which prompted me to go back to ISO 200.

Suggestion: start the timer for the next shot just before triggering the current one, not after. (Some extra logic will be needed if the shutter/processing lag is longer than the interval – in that case, the next shot should be triggered as soon as the camera is ready again.)

[Mark]

Good point, have added to my todo.

[Eric Sibert]

I'm also trying to use Open Camera for Mapillary picture collecting. I tried the burst mode with 1.0 s. I set focus to infinity. I found that real interval was of 1.33 s. It is also not very stable on long term (at least for 10 mn, I found jumps up to 0.3 s). So I would appreciate that effective interval is equal to the asked one but also to have a long term stability.

[Enteq]

I have an even worse problem that appeared recently with the Pixel 6 Pro with the current firmware: the lag for interval mode varies. Apparently the photo is only made when the phone is not moved too much, see also [#1000]

Example (set to 0.5s, focus infinite !!)

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[Anonymous]

Harun mudhai ![](Header	Header	Header
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[jaimet]

Also related:

https://sourceforge.net/p/opencamera/tickets/1013/
https://sourceforge.net/p/opencamera/tickets/919/