Anyone not using their kit lens that came with your camera? I put 14mm-42mm Olympus back in the box and may use it only for special needs (or not). But I have noticed an image quality difference with that lens vs. the other two lenses I own. Not that is it bad. Clearly, it is good. Just not up the the image quality level of the other lenses (in my opinion). Just curious if I am the only one.