This is what the pixel looks like on the upper left corner. Please take a look at 100%.
This image is a crop from the raw DNG file. The JPG doesn't show the dead pixel at all.
Although, It looks more like a white hot pixel.
It looks like DNGs from the SX160IS have a vignette and a lot of chroma noise in low light, even at iso 100. But RawTherapee helps big time.
It would be helpful if you can upload a sample DNG somewhere (too large for the forum, use dropbox, box.com, google drive etc).
DNG 1.3 + badpixel.bin will not fix hot pixels. For "manual badpixel removal" you need to create a file with a list of the hot pixels. The old show_bad tool mentioned on the wiki doesn't work on most modern cameras, but you can use chdkptp:
https://www.assembla.com/spaces/chdkptp/wiki/DNG_Processing#generating_badpixel_listsIf you are using raw therapee, the "dead / hot pixel" setting on the raw tab does a pretty reasonable job without a list.
I agree, this camera has quite a lot of noise at base ISO, and a lot of lens problems: Vignetting, distortion, chromatic aberration. The raw therapee chromatic aberration correction does a much better job than the Canon jpeg.
