Light Stalking. Flash applets on some technical aspects of photography. Thin Lens Uses Gauss's ray tracing construction to show how thin lenses perform a 3D perspective transformation of object space into image space. Depth of Field How do focal length, subject distance, F-number, and size of the circle of confusion affect depth of field? Telephoto Zoom Lens The operation of zoom lenses, telephoto zoom lenses, and optically-compensated telephoto zoom lens. Introduction to Color Theory Explores the trichromatic theory of color vision and considers its implications for human perception, color photography, and computer display of color images. Color Matching Reenact Maxwell's color matching experiment to see how closely you can match the trichromatic matching functions for the given primaries. Chromaticity Diagrams Explores chromaticity diagrams and the meaning of the 2D gamut of perceivable colors. Gamut Mapping Interactively shows the results of gamut mapping (both the primaries and the rendering intents) on the colors displayed in an image.
Color Mixing. Digital Photography Tips: Digital Photography School. Cambridge in Colour - Photography Tutorials & Learning Community. Browsing Photography on deviantART. Digital Photography Review: Galleries.