On Mon, 14 Jan 2019 14:50:13 -0500, nospam
wrote:

In article , Carlos E.R.
wrote:


Double exposure in film, I can understand.

yep. there are far fewer options with film.

But a digital camera would just add the pixel values from two files,
thus being no different from postprocessing on the computer.

it's different in that it doesn't require a computer.

Not even the one in the camera.

To be valid, the sensor would have to be exposed, and then, without
reading it, exposing it again. Are they really doing it?

that's not required, nor would it work particularly well.
--

Regards,

Eric Stevens