In article , Ron C
wrote:
Photonics Online News https://www.photonicsonline.com recently ran
several short articles on "Understanding Resolution In Scientific Cameras"
that covered a lot the questions in this thread.
[ You do need to be a subscriber to access the articles. ]
Then it doesnıt do us non-subscribers much good. Also, judging by the nature
of the content of that site, I believe an understanding of resolution in
scientific cameras isnıt going to help the users of consumer cameras engaged
in fanciful thought exercises in this room, one iota.
OK, i did some searching and found this article that covers a lot of the
mechanics
of the pixel size/sensitivity/resolution basics.
Here's a pointer to the article:
https://www.pco-tech.com/library/knowledge-base/#c1560
~
"Pixel Size & Sensitivity"
The relationship between pixel size of an image sensor and its sensitivity
is discussed in detail to illuminate the reality behind the myth that
³larger pixel image sensors are always more sensitive than small pixel
sensors².
it's not that larger pixels are more sensitive, it's that they collect
more light, resulting in lower noise. sensitivity is separate.
the article even confirms that, therefore it cannot be a myth:
Still the proportionality of SNR to pixel area at a constant
irradiance is valid, meaning the larger the pixel size and therefore
the area, the better the SNR will be.