How can I keep my face in the same position for a daily self-portrait time-lapse?
Asked 10/17/2011
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I want to take a self-portrait every day for a month and combine the images into an animation. For the effect to work well, I need my face to stay in nearly the same position from shot to shot, even if the background changes. I’d prefer to use my Mac’s built-in webcam since the image quality is good enough. What simple techniques, positioning aids, or workflow tips can help keep alignment consistent?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
14y ago
2 Answers
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I have seen complex setups involving rings around your body/head to make sure you are positioned perfectly in the frame. You could also do something simple like mark the position of your webcam(monitor) with tape and mark the position of your chair, then simply sit up straight.
Personally my favorite option is simply to use a ruler or similar measuring device, and position your eyes so that they are directly aligned at that distance. Pretty simple procedure, and you will be close enough to see the daily-self-portrait progression
All of this may be unnecessary though, you can use software to remove any of the jittery frames and balance out the slight imperfections if you wish.
Originally by user4892. Source · Licensed CC BY-SA 4.0
user4892
14y ago
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Use a repeatable setup and fine-tune alignment afterward. Keep the camera fixed in the same place, mark the monitor/webcam position if needed, and mark your chair position so your body returns to the same spot each day. Try to sit upright the same way each time and keep roughly the same distance from the camera.
A simple aid is to use a ruler or other measuring reference so your eyes are always the same distance from the webcam. More elaborate rigs exist, but simple physical marks are usually enough.
You can also rely on post-processing to remove small variations: align each face by shifting frames, zoom slightly if needed, and crop a bit to hide edge changes. That’s often the easiest way to eliminate small jitters.
Some apps can help by overlaying the previous shot as a translucent “ghost” image while you frame the next one, though the cited example was for iPhone rather than Mac.
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