ANY DSLR can get jpgs like those out of the camera consistently, even Pentax.... 
Just set the in-camera processing to duplicate what you like. I'm sure out of all the photos some were not to your liking...
Anyways this next part is not a critique (not really qualified) BUT if they were my photos this is what I may do to enhance them a bit and most likely would have either had to tweak th jpg settings or shoot RAW and tweak the jpg settings
This has a before and after:
After then before. Note the histogram in the before shot. Very bunched (low contrast)
--
360 minutes from the prime meridian. (-5375min, 3.55sec) 1093' above sea level.
'The exposure meter is calibrated to some clearly defined standards and the user needs to adjust his working method and his subject matter to these values. It does not help to suppose all kinds of assumptions that do not exist.'
Erwin Puts
Just set the in-camera processing to duplicate what you like. I'm sure out of all the photos some were not to your liking...
Anyways this next part is not a critique (not really qualified) BUT if they were my photos this is what I may do to enhance them a bit and most likely would have either had to tweak th jpg settings or shoot RAW and tweak the jpg settings
This has a before and after:
After then before. Note the histogram in the before shot. Very bunched (low contrast)
--
360 minutes from the prime meridian. (-5375min, 3.55sec) 1093' above sea level.
'The exposure meter is calibrated to some clearly defined standards and the user needs to adjust his working method and his subject matter to these values. It does not help to suppose all kinds of assumptions that do not exist.'
Erwin Puts