I need help understanding an apparent change in photo exposure level that is occurring during a time-lapse sequence on a Mavic 2 Pro while all camera settings were on Manual.
The situation is I captured a series of over 400 photos of a sunrise, each photo taken 2 seconds apart. There is no filter on the lens. Since I expect the lighting to significantly change during the flight, I set the camera to Manual. The photos were then processed in FCPX, on an Rec.709 timeline at 30 fps. The photos are jpgs directly out of the camera, unmodified as to exposure, color and saturation. The only modification is sequence stabilization which is a simple frame to frame transformation.
Since all camera settings were fixed, I expected that the overall lighting of the field of view would change and increase smoothly during the sunrise. The problem is that during the resulting video, there are two visible “jumps” in apparent exposure level between photos that have identical EXIF data. These “jumps” or changes absolutely ruin the video. I can understand if the camera was set to aperture or shutter priority, or if the ISO was on auto. But that was not the case.
I have isolated the specific photos before and after each change. Here is the video, and the photos with their associated EXIF data. Before and after each change in the video, I have frozen the frame.
Anyone have any ideas what's going on?
The time-lapse video:
Change 1:
Before Photo:
After Photo:
EXIF Data:
Change 2:
Before Photo:
After Photo:
EXIF Data:
The situation is I captured a series of over 400 photos of a sunrise, each photo taken 2 seconds apart. There is no filter on the lens. Since I expect the lighting to significantly change during the flight, I set the camera to Manual. The photos were then processed in FCPX, on an Rec.709 timeline at 30 fps. The photos are jpgs directly out of the camera, unmodified as to exposure, color and saturation. The only modification is sequence stabilization which is a simple frame to frame transformation.
Since all camera settings were fixed, I expected that the overall lighting of the field of view would change and increase smoothly during the sunrise. The problem is that during the resulting video, there are two visible “jumps” in apparent exposure level between photos that have identical EXIF data. These “jumps” or changes absolutely ruin the video. I can understand if the camera was set to aperture or shutter priority, or if the ISO was on auto. But that was not the case.
I have isolated the specific photos before and after each change. Here is the video, and the photos with their associated EXIF data. Before and after each change in the video, I have frozen the frame.
Anyone have any ideas what's going on?
The time-lapse video:
Change 1:
Before Photo:
After Photo:
EXIF Data:
Change 2:
Before Photo:
After Photo:
EXIF Data:
