[RBellavance]

You will notice that your camera managed to keep a lot of detail in the sky (especially striking in the first shot). I doubt your wife's A75 did the same.

Pentax's multi-segment metering is traditionally bias towards not blowing highlights. Once you know that, you have several choices:

1. Use positive exposure compensation in situations where there are areas of the image significantly brighter than the others (esp. the subject).

2. Use center-weighted or spot-metering to meter for your subject

I would also recommend looking at the image review after you take it, and turn on the histogram display on it.

The K10D, like other DSLRs, has the potential to take much better pictures than a P&S. But it requires more care and thought in its use to do so.