The Natural Philosopher wrote:
Andy Champ wrote:
The Natural Philosopher wrote:

Color transparencies which are used in pro film applications say your
are a liar.

Not really. Transparencies subtract some colours from the transmitted
light; prints subtract some from the reflected light. Displays make
their own...


Ah, so that is why they are backlit then?

So they can 'make their own?
What a prat. An LCD display IS a color transparency.

Thinking about this offline leads me to realise that there is a
fundamental difference between the operation of a slide and the
operation of an LCD display.

A slide consists of a series of coloured dots (CMY) mixed together in
such a way that they filter out some of the colour, and leave the rest.
A red dot will be produced where the G and B have been filtered out,
and only the R left.

An LCD consists of ADJACENT (not overlaid) coloured filters. So a red
dot is produced by having the B and G pixels opaque, and only the R one
(which always has no G or B) letting light through.

Andy