I took this picture:
and if you look at the details (like the trees on the right side) they are all kinds of muddy. I had the same experience when trying to take some group family photos (I had the camera on a tripod then, so I don't think it was due to vibrations).
However, this picture looks just fine.
And that seems to be pretty par for the course - I've tried different aperture values and zoom lengths, but it just seems like if I'm not focusing on something up close (less than 10' or so) then I just get a trashy image.
Is there anything I can do to fix/help this besides upgrading my equipment?