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Posted by hipstomp | 27 Aug 2010
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Comments (7)
Check out these cell-phone-camera shots of airplane propellors, victim to an effect known as "rolling shutter."
What gives? As Flickr user Jason Mullins explains,
[I shot this with] an iPhone 4, and the scanning typically goes from top left to bottom right so moving objects lean to the left. Essentially any electronic shutter camera (i.e. not an SLR like mechanical shutter) will give these effects. Wikipedia has some good articles here: en.wikipedia.org/wiki/Rolling_shutterFor those who want to try this out, just point your simple electronic shutter camera at an object moving parallel to you, preferably fast, and take the photo. The faster the relative speed between you, the more the distortion. Rotating objects go really weird!
Hit the jump to see more examples, this time shot by Soren Ragsdale.
Comments
That's pretty awesome
This a common effect known as "aliasing" which we encounter often in medical imaging. An extreme everyday example is watching a car commercial (or the wagon wheels in an old Western movie) in which the wheels are actually turning opposite to the direction the in which the vehicle is moving.
This is a cool example of the effect on a stationary object: http://cl.ly/bfe2fbb2ad149fc9e1e1 (taken in Sydney, at the beginning of the harbour bridge northbound)
That's really cool! Especially the last two :P
I witnessed this phenomenon when I took pictures from a Shinkansen (bullet train) in Japan. The buildings all looked like they were leaning 15-20 degrees.
So cool. I have to go get my own!
this was a problem with my GoPro camera, when I mounted it directly to my motorcycle. The vibrations of the motorcycle, for whatever reason, seemed to bring out the worst of the camera's rolling shutter effect... videos of stationary objects gave the impression of very flexible/bendy/wiggly buildings and objects.
Rather than having a stationary camera viewing moving objects, this situation was a case of a moving camera observing stationary objects.
Thanks for sharing these pics!