view on display vs real area on photo
I was running an orbid taking every 3 three seconds to do some experiments with photogrammetry.
On my screen, it seemed like I had set the radius and height so that the object could be seen exactly but not much around it. In the photos, however, the area photographed was much larger.
Maybe not a Dronelink related issue, but how can I tell the size of the area I'm shooting.
Or is the camera angle changed to a default setting.
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Just a thought but it may be that you have set in the DJI app to take 4:3 ratio set instead of 16:9 photos. It will capture more which can be edited later. Gives more to work with then automatically formatting it to 16:9 ratio. The mission preview should give you a good idea of what it will look like. Also depending on your drone you should change default camera to your specific drone in the preview. This way it will uses what that the drones camera specs are for best mission preview view comparison to what it may actually look like in real world flight. Also make sure the “Actual FOV in 3D” is turned on in the preview. It should be by default but make sure. Otherwise it will make a big difference when running it.
The gimbal pitch/ camera angle is set depending on the diameter and altitude of Orbit automatically. You can change the gimbal pitch in the Orbit by adding gimbal orientation if wanting more or less of a pitch.
I’m not sure what else it may be but if this doesn’t help then maybe someone else can assist.
In the orbit there is no option to select the drone unlike, say, mapping.
The best bet, therefore, is to export this and run it in Google Earth Pro and (and this is the secret) load the correct focal length profile into Google Earth. I have included a link to a file here that has a lot of the DJI drones FOV settings - but it's been a while since that was created.
https://www.dropbox.com/s/xes3e03javlj03f/DJI%20Cameras%20-%20Field%20of%20View.kml?dl=0
Load the mission into GE. Then load the FOV for the drone you want using that file, and then run the mission.
You are correct. I think there is a misunderstanding. I stated in the mission preview, not a camera settings for Orbit. There is a selector for running the preview based on the drone you select which uses the camera specs. Lens, sensor size etc. If you select the incorrect drone it may look different then actual real world flight. 😃
It appears that the option to use the camera spec only works for the preview in Dronelink, but not in Google Earth: That seems to stay at the default 60° field of view. Running one of the "tours" in Barry's .kmz file does work, although it's missing some current models. But you can find camera specs on the DJI site, however, so I found that the Mini has a 83° FOV, which is the same as the "Mavic 2 Zoom 24mm (FOV 83)" tour, and that does seem to be close to the actual FOV I see in my videos. After running the tour, the FOV stays set until you run another tour that changes it or exit Earth, so just run that before running your mission.
It's odd that the FOV is not an option in Earth's standard settings, but it isn't; it's only an option in the program .ini file or in .kmz files. It can also be adjusted when you import photos, and it will stay set.
Roger Harris
I just updated the FOV files - it now includes the mini 1, 2 SE, Air 2, Mavic 3 (FOV 84), Air 2S and others.
Updated file can be found here: https://www.dropbox.com/s/xes3e03javlj03f/DJI%20Cameras%20-%20Field%20of%20View.kml?dl=0
Hope you find it useful.
Thanks, Barry! I peeked in the file and saw that you set gx:horizFov to 71.56. Is that because the lens spec (84) is the diagonal FOV?
@Barry Houldsworth Thank you for this. Just updated to the Elite Plan so its now possible to view my plans in Google Earth
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