The A350's noise profile is good, but not great, for its class. Photos look very nice up to and including ISO 800, with a minimal increase in softness. However, at ISO 1600 and ISO 3200 color noise kicks in and smeariness from the noise suppression algorithms degrades detail. Note that these test shots were taken with the 18-70mm kit lens, which isn't terribly sharp to start.
Photo Credit: Lori Grunin