The following time lapse videos were created using "Skyflow," an iOS app running on my Apple iPad mini 6. Both videos show the sky over Fairfax County, Virginia USA during the afternoon of 17 December 2025.
I'm still not sure where to focus for maximum depth of field. (Please comment on this blog post if you can offer advice.) In the first video, I think I focused on the top of the red roof. I say "think" because it is difficult to see the screen of my iPad clearly when I'm outdoors.
Facing south-southwest.
In the second video I think I focused on the light blue water tower along the horizon, just left of the center of the screen.
Facing north-northwest.
Notice the wave-like shapes in the clouds, moving from left-to-right across the screen. I'm not sure what caused those features to form but they might be the result of small waves moving through the atmosphere.
Both video clips were combined using Apple iMovie.
What are the take-aways from my first field test?
Skyflow appears to be a robust app that provides the user with much more control over the process of creating time lapse videos than the built-in Apple iOS "Camera" app set for "Time-Lapse" mode.
I must say I'm very impressed by Skyflow. The learning curve is a little steep. The app features limited documentation (see Settings/Help), although the author personally assured me he's planning to create a tutorial video that explains how the app works. In the meantime, I recommend watching the videos listed under "Related Resources."
Tech Tips
The first two videos were adjusted using the built-in editor to level the horizon. The first video was also cropped slightly for better composition.
Essentially the first two videos are shown "as is," exported straight from the Skyflow app using the following settings: 4K (2160p); 30 fps; H.264 (MP4); Best Quality; and Smooth Motion.
Related Resources
- Skyflow - Apple iOS app for creating time lapse videos, by Andrei Kovalev
- Best iPhone TIMELAPSE app (3:59) - a YouTube video by Matthew Vandeputte
- Skyflow (Time Lapse App) Walk-Through Tutorial for Beginners (6:49) - a YouTube video by "Cloudage"
Copyright © 2025 by Walter Sanford. All rights reserved.
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