Originally posted by Studio20 my point is the scene looks dull compared to the canon 40d i used
OK, try that exact same and see if your memory is correct here. I'd be really surprised if the Canon exposed this scene any brighter - it's dangerously close to clipping in spots as it is, and the scene is totally dominated by bright sky and sand that is already being exposed *way* brighter than ISO standards would suggest.
In any case, what we are saying stands - the Pentax exposure here is *correct* according to ISO standards. But "correct" doesn't mean "what you want" - ISO doesn't have a standard for mind-reading. It's totally normal with an exposure system that sometimes you need to override the camera's suggestion. That's been true since the dawn of photography and is discussed in every book on photography ever written, as I mentioned before.
So yes, maybe you want this scene brighter. That's why the camera - like all DSLR's - gives you the ability to override its suggestion. That's normal. We're not talking about PP here - we're talking about applying exposure compensation - an absolutely normal part of DSLR photography.
Quote: maybe im just used to my old camera overexposing the scenes?
canon is indeed known for a tendency to expose on the bright side - the be willing to blow out highlights. Pentax is is indeed known for a tendency to expose on the darker side - to refuse to blow out highlights. Neither method is likely to *exactly* match what you want all the time. The point is to learn to anticipate what settings will lead to what results, so you'll know in advance when to apply compensation.