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Old April 18th 18, 09:02 PM posted to rec.photo.digital
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Default A camera with a sensor bigger than 8 by 10 inches??!!

In article , Neil
wrote:

If that 12 megapixel is the actual resolution and isn't a typo, I'd much
rather carry my Olympus TG-4.


while it may be easier to carry, it has much smaller pixels, therefore
much higher noise.

"Much" higher noise?


yes.

I seriously doubt it.


then you don't understand physics.

S/N has more parameters than
just pixel size.


so what?

the dominant factor for noise is pixel size. larger pixels collect more
light. basic physics.

the 12mp 8x10 camera has 75 micron pixels. those are *huge*. its base
iso is 2100, versus a base iso of 100-200 on a typical slr.

https://www.dpreview.com/files/p/art...eSense-Sensor-
Size-Comparison-x800.jpeg

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).