Thanks Richard. Setting the focus to Camera.Parameters.FOCUS_MODE_INFINITY helped as shown in the added histogram at http://stackoverflow.com/questions/11727240/how-to-reduce-the-variability-in-android-camera-shutter-lag
At the risk of sounding like an ingrate, do you have any ideas on how to reduce the variability even more? (A range of 0.2 s still covers a large portion of the periodic motion.) -- Greg On Monday, July 30, 2012 3:05:50 PM UTC-4, RichardC wrote: > > Could it be related to auto-focus? Try turning it off. > > On Monday, July 30, 2012 7:55:52 PM UTC+1, greg wrote: >> >> Given a known periodic motion (e.g., walking), I'd like to take a full >> resolution snapshot at the same point in the motion (i.e., the same time >> offset within different periods). However on the Nexus S (currently running >> OS 4.1.1 but the same was true of previous OS versions), I'm seeing so much >> variability in the shutter lag that I cannot accurately plan the timing of >> the snapshot. Is there anything I can do in the application to reduce this >> shutter lag variability? (In this application, the mean lag can be any >> duration but the standard deviation must be small ... much smaller than the >> 0.5 s standard deviation I am seeing.) I'm hoping someone has a clever >> suggestion. If I don't get any suggestions, I'll post a feature request in >> the Android bug tracker. >> >> I've posted the same question (and showing a histogram of camera shutter >> lag times) at >> >> >> http://stackoverflow.com/questions/11727240/how-to-reduce-the-variability-in-android-camera-shutter-lag >> >> Thanks! -- Greg >> > -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
