hummm... it really does all depend... I do seem to run corrections on images using flash but then again I run it without... LOL I am really a shoot from the hip kind of gal... I am so not techie... LOL I wish I was in some way... & even tried to some years back, but somewhere in all the techno info of knowing somethings it just got in my way for the feel of photography as an art... hummm wonder if that makes sense... don't get me wrong you should always try to get it right in camera but if it means taking away from the art end of it for me I always let go of the tech stuff & shoot from within...
gaddddddddddds... ok just here a day & already I am sure you see I am a rambler... LOL sorry
hope somewhere in all them words I answered your question...

JAJ