Really cool propeller effects on camera phone

[OBIO]

Okay...I have to admit that I have the day off....am bored out of my mind....and am killing off a few billion brain cells watching videos on Wimp.com.

This one shows a really cool propeller effect on a cell phone camera video thingiemajiggy.

http://www.wimp.com/recordpropellers/

[HighGround22]

.
While on the one hand I'm aware of how the propeller's blade rate can combine with the camera's shutter or frame rate to give some odd effects, I'm really quite astonished at THAT particular result. If somebody'd merely described it to me, I'd have wondered what he was smoking.

Thanks for sharing, Mate. Nice trivia break.

[Daveroo]

thats just bazzar..sure that wasnt a reflection off the window?

[magoo]

Welcome to the Matrix, Neo....

[TheGrunt]

Rolling shutter. Causes odd pictures and clips sometimes, surely.:mixedsmi:
http://en.wikipedia.org/wiki/Rolling_shutter


http://www.youtube.com/watch?v=TUBfqbHMaxQ

[Dain Arns]

A majority of the cameras in cell phones use the CMOS image sensor to photograph because it doesn't require large amounts of power to use.
Like TheGrunt had posted just before me, it uses a "Rolling Shutter" effect.
CMOS is a scanning style of sensor, so the image is created over a period of time.
Any fast moving objects in the image will have artifacts, like the prop in the video, especially when its close to the same speed as the rolling shutter effect, as I understand it.

The other style of sensor, CCD capture an entire image one frame at a time, but can consume power up to 100 times more than a CMOS.

"How Stuff Works" has multiple pages of info on digital cameras and how they operate:
http://electronics.howstuffworks.com/cameras-photography/digital/digital-camera2.htm

(Cool video BTW, TheGrunt.)

EDIT: Okay, ended up watching more videos on YT with Rolling Effect.
This one looks cool to me.
How I would image it would be like to be on 'Acid'? I dunno... :icon_lol:

<iframe src="http://www.youtube.com/embed/bzjwnZDScxo?rel=0" allowfullscreen="" frameborder="0" height="315" width="560"></iframe>

[srgalahad]

My Gawd! I kenna hold her together Captain! We're sheding Dilthium Crystals at a horrendous rate! The old bucket's gonna blow!

(but I DO like the way it grows new blades just as fast...)

[Landman]

That first video - the plane has a boomerang emitter.