Minolta DiMAGE 7i Review (full) at
noise report at
While I have not been able to carry out direct side-by-side comparisons it seems fairly clear to me that the DiMAGE 7i exhibits higher noise in shadows and deep blue skies than its predecessor the DiMAGE 7. We are used to seeing noise at higher sensitivities (ISO equiv. values) but with the 7i noise can be seen even at ISO 100 (see below). These noise levels are higher than we would expect of a 5 megapixel digital camera and are definitely higher than some of the competition notably the Nikon Coolpix 5000 / 5700 and Sony DSC-F707.
In the samples below you can see the typical amount of noise visible in shadow regions or deep blue skies. Both exposures shown below were taken at ISO 100.