Phantom 4 Pro V2 Overexposure Issue
I recently acquired a P4Pv2 - I know I'm working with old equipment, but I was looking for that mechanical shutter and I didn't want to jump into the higher end equipment yet. My problem is my mapping missions always overexpose the image even though the exposure settings, histogram etc. all look correct on the screen. I am using either full manual or AE priority, not using auto exposure during the map mission.
I might be having an issue with the shutter not working properly. However, I have been able to get a properly exposed image in the DJI app and in Dronelink, just not within the mapping routine. For example, I put the drone up with DJI app, reset all camera settings, set exposure, took a photo and confirmed it was correctly exposed. Bring the drone down, force the DJI app to close, open DroneLink and start a map mission which has no camera commands just the map sequence. Monitor the histogram and exposure throughout the mission - all looks good on screen. But the stored images are overexposed. The settings recorded on the image files are the settings I expect and should result in proper exposure.
I've tried issuing camera commands in the mission and I've tried removing those - still it seems that for some reason when the map sequence begin bad things happen to the exposure.
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3 comments
I would suggest sharing the mission. There might be something in the map job you're not seeing.
All I can say is I mapped thousands of acres with that setup with no issues. But that was some time ago.
The Dronelink app only triggers the camera to capture photos and has nothing to do with exposure or any of the other cameras settings. So if they’re over exposed once set correctly then there may something with the drones camera. DL would not change or alter the cameras settings once set manually unless you have a command somewhere in the plan to change it.
Thanks for your responses. I've finally determined the mechanical shutter is failing and the failure becomes more noticeable at high shutter speeds (about 800 and up). Taking two images, one with the mechanical shutter enabled and one with the shutter disabled produced different exposures and as the shutter speed is increased the overexposure increases.
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