Ultraviolet photography is also possible for special applications. Color photograph in visible light. Sunken garden on campus of Emporia State University. Note natural color of vegetation, flowers, flags, etc. Color-infrared photograph of sunken garden on campus of Emporia State University.
Active vegetation appears in red and pink colors.
Note changes in colors of other objects. Photograph taken with a yellow filter to eliminate blue light. During the 1990s, digital still cameras were developed for popular and scientific use. A CCD is essentially a microscopic array of semiconductors that measure light intensity in a raster grid. Early digital cameras could not deliver the high resolution possible with conventional film.