I'm with Bp & Marvin the first image is quite dark while the second looks much better.. I'm also using calibrated monitors here... Open up
this link as i've uploaded the PDI Test Image used for calibration. If you look in the centre of the image you'll see a row of squares going from white to black gradually (Kodak Gray Scale). On your screen are you able to different between the the squares labelled A, 1, 2, & 3?
He's a cute boy, you can tell he's a happy baby!
EDIT: Sorry wrong pic, linked fixed