Quote Originally Posted by Kym View Post
Not if the pixel pitch/technology is the same.
Consider 120 film ASA 100 and a 35mm film frame also ASA 100 -- the same exposure will have the same grain ... i.e. noise.
Take a 35mm sensor, and some black tape, mask the sensor down to APS-C size -- does the noise change due to the black tape? Of course not.
Except that you need to enlarge the APS C size more (1.5x or 1.6x) to match the FF image and therefore that will mean the noise is "amplified" or made to look bigger in relation to the FF image.