Their performances are slightly different, mainly because IXUS2 10 has better wide angle, while SX2 10 telephoto is better. Everything else is basically the same.

You said you shot Xue Huadian in the dark. That was noise. Two reasons:

1. Your ISO is too large. It is generally recommended not to exceed 400. In order to ensure good image quality and little noise, it is recommended to keep it below ISO 100. If you are afraid of blurring caused by jitter, you can choose a tripod to increase the exposure time.

2. The photo mode you chose is unreasonable. SX supports manual and adjustable aperture; IXUS is fully automatic and cannot adjust the aperture. The aperture is too small, the light is insufficient, and the CMOS area of the light is also reduced, so the noise is increased. This can change the large aperture.

This is not the quality of the camera, but your use. To use a camera well, you need to know some optical knowledge to give full play to the camera's maximum performance.

Purchase goods. Com 360 picks the answer for you, thank you.