I'm sure a lot of you are probably already aware of this, but I'm posting this for those of you who aren't....as I come here a bit and was completely unaware.
http://arstechnica.com/apple/2012/07/retina-macbook-pro-maximizing-battery-life-with-gfxcardstatus/
Even Keeping PS open in the background locks my computer to using the discrete gpu (possible b/c I have that checked in preferances) so closing that alone saved me probably 1-2 hours...for those fellow photogs out there. Good luck...enjoy your macbooks.
http://arstechnica.com/apple/2012/07/retina-macbook-pro-maximizing-battery-life-with-gfxcardstatus/
Even Keeping PS open in the background locks my computer to using the discrete gpu (possible b/c I have that checked in preferances) so closing that alone saved me probably 1-2 hours...for those fellow photogs out there. Good luck...enjoy your macbooks.