Invented by Robert S. “Bob” Harris of Kodak, the Harris Shutter was originally a strip device with three color filters used for making color photographs with the different primary color layers exposed in separate time intervals in succession. The same frame of film was re-exposed through red, green and blue filters in turn, while keeping the camera steady.

Our digital version of the Harris Shutter uses separate images for the red, green and blue channels. In the case of a time interval between images used for the red, green and blue channels, this will generate a rainbow of color around any object that moves within the frame. Some good candidates for subjects include waterfalls, clouds blowing over a landscape or people walking across a busy street.

Special Effects.

Sets the source image to be used as the Red, Green and Blue channels. If an image is not assigned using Source, the original image’s color channel will be used.

Allows you to offset the frames used for the Red, Green and Blue channels.

Controls how much of the Red, Green or Blue image is contributed to the composite image.