Fielden 14.2.13Experimenting with shutter speed to freeze or reveal movement.
Here is the presentation with some good examples of the effects of varying shutter speeds on the image: Shutter Speed PDF
Richard did some funky moves to illustrate the effect of different speeds:
ISO 1600, 1/125 shutter speed, aperture 5.6.
ISO 1600, shutter speed 1/15, aperture 5.6
As well as changing the exposure, the slower shutter speed means that his arms are becoming more blurred.
1600, 1/80, f2.8
Or to reveal it: camera rested on a wall, 35mm, ISO 1600, 0.3, f13
Overexposing the image lost the dark and brought up the background. Way too much in this shot, but also below at 2 secs, f22
55mm, ISO 200, 15 second exposure at f5.6
A shot taken with a brighter torch moved around the subject - me! 15 seconds at f16