On 07/10/2015 09:59, whisky-dave wrote:


Because people knew about this some 100 years before the digital
camera existed. People that knew about photography rather than
comparing film to digital would know about this.

The only person comparing film to digital is you!
Everyone else is comparing digital cameras to film cameras and saying
they are the same as far as teaching photography goes.
You on the other hand are saying they are different and digital is so
different that its hard to teach photography with digital but still
can't tell us why.