Cute pics, loving the expressions on his face, especially the last one. He looks like he's saying "ok, mom, now get the camera out of my face" My lens should be here tomorrow, can't wait!
Just cuz it is f/1.8 doesn't mean you should always shoot at f/1.8, lol. Try some similar shots at f/5.6 to f/8 and see how sharp that lens can be. The best part of fast glass is it's usually much sharper than slower glass at the same f/#. So your 50mm f/1.8 shooting at f/5.6 will be *much* sharper than my kit lens at the same aperture.
I just got my 50mm f/2 in yesterday, but I have to wait for the adapter to get here from Hong Kong (10-14 days, ugh!). I can't wait to try it out. I'm envious.
OMG.... I'm in loooooooovvvvvvveeeeee! I'll be posting up some new pics of me playing with my nifty fifty in a minute. THis lens will easily (mostly) replace my kit lens!!!