Thursday 28 February 2013

Shutter speed

Fielden 14.2.13

Experimenting 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.
This shutter speed is fast enough to capture the movement of his arms, but the fingers (which are moving the fastest) are just beginning to blur.
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.

One element in a photograph that is blurred whilst other are static can create interesting effects.
Shots out on the street were designed to capture movement: ISO 1600, 1/60, f2.8









1600, 1/80, f2.8













Or to reveal it: camera rested on a wall, 35mm, ISO 1600, 0.3, f13










 0.3 secs, f2.8
 Overexposing the image lost the dark and brought up the background. Way too much in this shot, but also below at 2 secs, f22
0.3, f13
Back in the studio we set the cameras on tripods and used very long exposures to capture light drawings with torches.

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

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