dennisg@fritz.UUCP (Dennis Griesser) (03/16/87)
In article <1987Mar10.151850.14051@sq.uucp> msb@sq.UUCP (Mark Brader) writes: >Overhead projectors, as usually used, give images that are light gray >on a white background. Yuck! Turning off the room lights makes it dark >gray on white, but can also be unpleasant. At the first day of the >conference, however, instead of overhead projector foils we were given >slides, typeset in white on blue. Much better! This was apparently an >innovation of the organizers du jour; it should become a standard. >(And if the speakers want to point at the slides, the dark background >allows either flashlight or laser pointers to work nicely.) About three years ago, I presented a paper at HLSUA (Honeywell's group) and every presentation that I saw used 35 mm slides. The lettering was white on a dark blue background. As Mark mentioned, this made for easy use of a light pointer. In addition, the slides were loaded into a carousel slide projector. The speaker held the remote control. The only problem I encountered was a projector with a brain-damaged automatic focus feature. Whenever I changed slides, the image would start out crisp and rapidly become fuzzy. When manually corrected, it would de-focus itself again automatically. AAARGH!