Shake

This work by Adam M is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 2.5 Australia License.

Littlest brother, demonstrating how quickly he can turn his face back and forth.
This was taken with one of my old f/2, 50mm lenses, probably wide open. In my exif lines I convert the focal length to 35mm equivalent.

Pentax K-x - 1/800 sec - f/0 - ISO 1600 - ~75mm

Ambient sun from behind.

Used Gimp to clone out a floating cat hair that had caught the light, then cropped the image. Cropping as first action is more sensible.

The backlighting was perfect for highlighting the spittle released by his crazy face wobbling.