I'd got a little bit of money to spend on photo gear, and Im currently taking a lot of live music photos..
my most used lens for this, apart from my nifty 50 f1.8, is currently my Tamron 28-75mm 2.8.. I'm seeing the 24-105mm L f4 for good prices lately and am considering upgrading..
Will the IS partially compensate for the loss of aperture, 2.8 for 4 in low light situations?
any opinions or suggestions on this??? bad move for my purposes?? the 28-70L 2.8 is outta my price range unfortunately..