Hands-on with digital projectors

摘要

Film projectionists have had many years of experience with the multiple tasks that their day to day work involves. What differences will the change to digital projection make for them? Film projectors consist essentially of a light source and power supply, a film head, and an optical system, and when you get behind the casings you find that many digital projectors use basically the same elements, with the film head being replaced by a digital imaging system. In the first of a hands-on practical series from Christie, TDP shows what is involved for projectionists in changing a xenon lamp on the Christie CP2000 2K projector. Cinema Technology is a professional magazine for professionals, and so we won't go into detail about the need for all the usual safety precautions and protective clothing when lamp-changing - the safety techniques that served you well for film projectors should also be applied when you are dealing with digital projectors. The safety-related things that you have learned over the years, like being sure to replace a lamp when it reaches its warranted lifetime, and certainly before it gets to 20% above this, were taught you for good reasons - old lamps become increasingly fragile and the risk of explosion increases.