If you tinker with the standard setting (which you should use for the first 100 or so hours anyway) I think you will find your best picture. But try this link (this is the closest to your model that they have): http://www.tweaktv.com/tweak-my-tv/calibration-guide/samsung-pn50a460.html

I have your model and I've made slight adjustments to dynamic and standard. I use dynamic for daytime/window blinds open, and standard at night/for movies. Again though, I've adjusted both of these slightly. Hope this helps.