Canon PowerShot SX230 HS Digital Camera Review$349.99
The SX230's handling of noise is very poor. Image noise cracks a full 1.00% as early as ISO 200, and increases exponentially from there, finally reaching 1.83% at the maximum sensitivity. More on how we test noise.
The range of available ISO levels extends from 100 to 3200. That's pretty standard, though 6400 would've been welcome. No reduced resolution extended ISO settings are available.