Deleted member 88956
I was referring to OP, I have no idea what he meant by dull images. just widely guessing it had nothing to do with the camera or lens.It depends of how you define "dull" .
I've had some colour film back that I would call "dull" or "muddy" .
I put it down to them using developer that had gone well beyond the point of needing to be replaced .
I never used that place again , and never had that problem with anyone else .
In the first post the O.P said the pictures lacked "crispness" which would suggest either motion blur , out of focus or lack of contrast .
It was the second post that stated "dull" .
Without sample images it's impossible to determine where the fault lies , and even buying the best gear in the world might not change the resultant images if it's not the camera and lens at fault .