ABSTRACT
Photographers rely on lenses to form sharply resolved images. Their precision, engineering and materials often necessitate expensive purchases to add lenses to the photographer's toolkit. Filters are accessories that modify or adapt the optics of a camera system and, thankfully, augment our image-making capabilities for cheap. All lens filters change aspects of the light entering the camera. Software processing offers simulations of a subset of lens filters that can be introduced after capture though many filter behaviors cannot be emulated. Our interest in controlling light at the capture stage means considering lens filters as carefully as the camera body, lens focal length and exposure settings. In other words, lens filters are 126an irreplaceable part of pre-planning and pre-visualization. This chapter explains how light is filtered, how it impacts exposure and the different ways in which filters are used in making photographs. At its end, we take a creative look at reproducing color from monochrome captures with the help of lens filters.
