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Old January 17th 19, 03:34 PM posted to rec.photo.digital
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Default Tips for Mastering In-Camera,Double Exposure Portraits

In article ,
Whisky-dave wrote:

It is two separate exposures on the same frame. Which is what a
digital camera does not do, so it is not double exposure.

it's two separate exposures in the same memory, before it's written to
a raw or jpeg image, thereby making it a double exposure by any
definition.

No it wouldn't, as it would be in the same 'memory' as that would require
complety overwriting the information from the previous exposure.


no.


yes, you obviously dont know much about electronics down to that level.


actually, i do.

Itls digital remmeber either a 1 or a 0 unlike film.


a silver halide crystal on film is 1 or 0, depending if light hit it or
not.

a sensor in a digital camera is an analog device whose output voltage
varies on how much light hits it. not 1 or 0.

the values stored in memory are as much as 48 bits per pixel, much,
much more than 1 or 0.