same problem professional pianists have, that you have no control
over the quality of the projector that you have to use. (On one
occasion I brought my own projector to a meeting because the
organizer told me with one day's warning that only PowerPoint on a PC
could be used, but that's a lot of trouble.)
I've at least twice been faced with projectors that had no red
(projecting red as yellow), and yellow text against a yellow
background isn't too legible. (Why would I want yellow text against a
red background? not too often in reality, but it can be useful for
stuff that the audience must notice, for example that a particular
chemical is explosive or highly toxic) That happened to me about
five years ago, and happened again in a meeting last week where I
wasn't presenting, but others were. On other occasions even with no
missing colours the projector may be so different from the one used
for practising that contrasts are not what you expect them to be.
Once this was bad enopugh that I did some last-minute editing an hour
or so before the presentation, but that is obviously not a perfect
solution.
Have others been faced with this problem? Is there an obvious
solution, other than preparing several different versions of a
presentation with the idea of selecting the one that works best with
the projector available?
athel
--
Athel Cornish-Bowden
acornish@ibsm.cnrs-mrs.fr
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