Powershot S100 QC

I bought my S100 yesterday, and I'm thrilled with it. It was foolish of me to think that manual controls was going to be as good as a DSLR though, but it's still very nice.

I have taken several photos with it (mostly things in my room), and so far as an amateur, I can't see alot of flaws in the photos.

However I do know quite well of the infamous issues of the S100, lens decentering and what not. So for the sake of knowing whether I got what I paid for (what my mum paid for actually), please look through a few photos I have taken (including some graph papers) and judge them...

1/30, F2.0, ISO1250

1/5, F2.0, ISO80

1/800, F2.0, ISO400

1/800, F2.0, ISO400

Pardon my photography skills, this is the first 'real' camera that I've owned, despite having operated a few of my friends' DSLRs.

Thanks in advance, and I'm sorry to create a new thread just for this.