On Thu, 19 Apr 2018 17:44:24 -0400, nospam
wrote:

In article , Neil
wrote:

size matters. full frame sensors have about a stop less noise than crop
sensors, which have about a stop less noise than micro 4/3rds, which
have a lot less noise than compact cameras and certainly cellphone
cameras, which have tiny sensors and very aggressive noise reduction
(which works fairly well, but not without compromise).

So a bigger sensor means less noise for the same sensor type.

Nospam ignores the fact that his reply to my comment was comparing
_cameras_, not the noise level of a single sensor cell.

i was comparing cameras.

Nope.

wrong.

At 12mp, the
final output of that 8x10 camera will not produce an image with the same
linearity and gradation accuracy of a camera with a much smaller sensor
but two times as many pixels. So, the inevitable errors in the final
image is also "noise", and more relevant than what the individual sensor
cell can capture because it's the image that one looks at, not the
sensor cell's noise level.

false.

Once again, you are wrong. Do the math, then come back with the same BS.

i've done the math, as have many others.

simple example: 12 mp cellphone camera versus 12mp full frame slr.

You are right. Cell size does matter for shot noise.

you're wrong.

tl;dr size matters.
--

Regards,

Eric Stevens