"The Natural Philosopher" wrote in message
...
dennis@home wrote:


"The Natural Philosopher" wrote in message
...
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.

No it is not!

A transparency is a subtractive process.
An lcd is additive.

Think again.

I have, you are still wrong.



Each pixel in a film transparency has three filter layers each of which
can absorb a colour.


I've not heard of pixels with respect to film before. Make it up as we go
along?

Each pixel on an lcd is made from three different colour subpixels.
The subpixels each have a colour filter behind them to make them RGorB.

Which amounts to the same thing in practice.

No it does not.

You need different spectra for an additive system and a subtractive system.