Optical engineering at Los Alamos, which began in 1943, has continued because scientific researchers usually want more resolving power than commercially available optical instruments provide. In addition, in-house engineering is often advantageous--when the technology for designing and making improved instrumentation is available locally--because of our remote location and the frequent need for accurate data. As a consequence, a number of improved research cameras and lens systems have been developed locally--especially for explosion and implosion photography, but even for oscilloscope photography. The development of high-speed cameras led to the ultimate in practical high-speed rotating mirrors and to the invention of a rapid, precise, and effective lens design procedure that has produced more than a hundred lens systems that give improved imaging in special conditions of use. Representative examples of this work will be described.