- Camera fixed to a tripod – flow of movement across view
- simple, plain background
- series of exposures – fast to slow shutter speeds
- adjust the aperture each time, so the exposure is the same
- compare shutter speeds and effect
Robot experiment carried out to practice this first.
I fixed the camera to a tripod and used the Tv setting to control the shutter speed. I placed a black towel in the background so nothing would distract from the affect of shutter speed on the moving subject. I decided to use a wind-up robot as the subject so that I could control the scene and concentrate on altering the shutter speed. Every time I placed the robot on the table to start I made sure it was in the same spot so that focus would be consistent for all of the images. Below are the 11 exposures resulting from the change of shutter speed.
I started with the camera set at it’s longest exposure setting of 30 seconds. I then gradually increased the shutter speed with the aim to stop when the robot’s movement is static in the frame. At 30s and 20s the robot was able to walk across the frame within the exposure time with a ghost-like appearance. As the shutter speed increases the robot’s appearance becomes more distinct and it’s movement trail is shorter. At 1/4 the robot’s movement is reduced to significantly until it is captured as still at 1/20.
This is an affect that I’d like to explore further.