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best ground speed aerial photography

Posted by Bart on June 3, 2010 at 6:30am
Hi,
Looking at the Sony DSC-HX 5v with the burst option and finding out that the saving-time after a burst action would take up to 20 sec, i was wondering what the optimal (ground) speed is of a UAV...

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Replies

  • T3
    Brian Wolfe June 4, 2010 at 9:42am
    Some cameras also have the option of locking the focus. I lock my focus to inf. and it reduced my cycle time form approx 3 seconds to 1 second.
  • Bart June 4, 2010 at 8:22am
    Thx everybody!
    @Krzysztof : what camera are you suggesting/using?
  • T3
    Rory Paul June 3, 2010 at 8:28am
    Unfortunately if you fly legally at 400 ft the interval between images can be very short if you allow for overlap. For best results this can be as much as 50%. So your camera / memory needs to be fast. Take into account that it needs time to focus and this is effected by the amount of light and the speed / movement of the aircraft.

    There is nothing worse than running a flight and finding that you are missing images.

    Good luck

    R.
  • Moderator
    Gary Mortimer June 3, 2010 at 8:25am
    Ground speed has two speeds don't forget, into wind and downwind.

    If your after overlapping shots for stitches you will need to think about that as well. Twenty seconds at 60kmh with a 40 kmh following wind you will have covered a fair bit of ground in that time.
  • Chris McNair June 3, 2010 at 7:22am
    Depends on height, speed and FPS of camera system. Seems 75m at 60kph is good for 30FPS.
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