Tuggem said:jrista said:(and this is indicated by the current Sony 24mp APS-C sensor, which also has very low read noise...but is noisy as hell.)
This is incorrect information. The Sony 24MP APC-C sensor has the same noise performance as their 16MP sensor. Both outperform 7D at high iso noise.
According to DXOMARK the difference between NEX-5n and NEX-7 is less than 0.1 stop. This has also been confirmed by several others by subjective IQ tests.
I wasn't actually referring to read noise, which is superb in Sony's sensors. I was referring to photon noise, which tends to make up the bulk of noise anyway. At such a high density, as a matter of physics, low-ISO photon shot noise is going to be higher (well, it will be higher at all ISO levels, but Sony wins out on the high end due to their extremely low read noise levels.) Sony APS-C sensors are a little larger than Canon APS-C, so its not going to be as noisy as a 24mp Canon APS-C would be, but it doesn't really matter who manufactures them...if we keep pushing APS-C sensor resolution, things are going to get noisier.
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