03/13/2014
Hello again from the good offices of Reign of Terroir Productions (my living room, essentially). A word about shooting jpeg vs Raw. If your camera provides you a choice, then ALWAYS shoot Raw. Simple enough; but why, you ask? Raw is not an acronym but means exactly that: it is the unprocessed (raw) output from each and every red, green and blue pixel on a camera's sensor. A jpeg, by contrast, passes through a series of filters, some of which a photographer has preselected and others which the camera's brain automatically chooses: white balance, saturation, contrast, sharpness, so-called 'Scenes' etc. All of these filters (or modifiers) FIX the image such that post-production becomes nearly impossible. If, for example, you had you camera set to 'Sunlight' and then you took a photo under artificial lights of a restaurant, your subject would have a distinctive green or orange cast, depending on the type of resto light. Now try to fix it so that the subject appears 'natural'. Good luck! The white balance can hardly be altered; and this is one of the reasons food shots often look so awful. Who'd want to eat that pale green chicken ?
Had you shot that same photo in RAW, you could easily change the white balance on your computer. Same with the contrast and the saturation. Indeed, you can increase or decrease your f/stop as well. Shooting in RAW simply gives you maximum flexibility to render on your computer the subject/location as accurately as you perceived it. Jpeg is largely a finished image. Nearly all the processing has already been performed within the camera itself.
Lastly, I almost always shoot on AWB (average white balance), though, strictly speaking, inasmuch as I shoot RAW, it really doesn't matter. However, if you have a client standing by or wish to enjoy the immediate gratification digital cameras provide, then shooting in AWB will guarantee a presentable image on your camera's LCD screen.
If your camera does not offer RAW, then shooting on AWB is the best you can do.
Hope this helps improve your shooting!