What do you mean by noise in photography? I don't know much about iso noise.

The so-called noise refers to the noise. Because of the imaging principle of CCD, many mottled points will be produced during imaging, and these mottled points constitute noise. Generally speaking, the better the CCD, the more advanced the algorithm in imaging processing and the less noise. The noise of SLR is obviously better than that of household DC, which is the reason. In addition, noise is closely related to ISO, and the higher the ISO, the heavier the noise. For noise, we can remedy it by post-noise reduction, and the effect is good.

if you want to choose a camera with low noise, you can focus on the noise performance under different ISO.

Canon is recommended for home DC, and the quality is guaranteed.