Using Litchi on a Mavic Mini(or for that matter any drone), how fast can a drone fly and how much of a "stop), is generally required for a drone to be pretty much stable, to take a good photo.
I hear 1 second from time to time, but 1 second seems quite short …
With good light you will have a shutter speed at 1/500 to 1/1000 of a second, so a one second halt is well beyond what’s needed.
makes it sound like a worth process 20-25 minutes to fly and for 200 photos … 3-1/2 minutes … great!
My experience,
With a reasonable altitude (>60m), short shutterspeed (>1/500) and good lighting my experience is that you don’t even have to stop with drones such as a DJI M3E. You can continue flying (at a reasonable speed) even with pretty low light conditions such as a complete overcast. I’m not sure how this will work out for drones with smaller camera(sensor)s
A recent (cropped) example singleimage flown from 70m (GSD of 2cm) with a M3E
Zoomed in on 100%
The complete mapping gave nice results
GSD is also something that might impact what shutter speed is suitable.
@APOS80 The finer detail you want, the more useful it becomes to pause during the capture in order to prevent image blur as much as possible, am I understanding your comment correctly?
Yes
If the drone travels 5m/s it moves 0,005 meters at a shutter speed of 1/1000.
5mm movement with a GSD of 10mm could have a small negative impact on the image.
The images for this were taken using a mini2 flying at a max speed of 20MPH at 285 AGL and a grid pattern
See here for decisions on shutter speed vs motion blur:
I have watched my drone “stop”, at about 40 feet height … I noticed it takes a split second to stop and has a small wobble when it does, the it actually is stopped(in air).
I cannot time the instant the drone actually recovers from a stop, to when the drone is actually stopped and stable … a second seems about right, but the photo would, I think, be taken at or near the tail end of the 1-second stop … a very acceptable solution … but when is a picture actually taken … if it’s less than halfway through the “stop”, it might be very close to when the drone is stopping and stabilizing … 2-seconds at 200 photos will really cut things close … almost 7 minutes for stopping.
This is when more programming within software would be nice … stop the drone wait 1/2 second and take the picture.
I wonder if data exists to explain drone stop and go photography?
If you got good light then you need to stop, fly at about 3m/s and have a 1/1000 shutter.
I think I have the lower end of a camera(purported to be 1/1-1.3", which is really one of those quad arrays(?), Hubsan Zino Mini Pro.
At 328 feet, and 5m/s, I don’t think my camera can discern the small distance traveled at about 1/500 second, without stopping … When I get a better drone/camera, it will be more important.
Thanks, John
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