First of all, those filters that are applied during JPEG compression no longer happen. If you have never shot in RAW it is difficult to fathom without a bit of explanation.
So we have discussed some of the trials and tribulations of shooting in JPEG, now let’s take a look at RAW. I am not saying that you cannot recover a JPEG, I am simply stating that the quality will many times be compromised. Another downfall is White Balance, it is very difficult to recover a bad white balance on a JPEG without seeing image distortion and unwanted noise. There will also be a large amount of highlight blowout, take a look at the image to the right. If you take an underexposed JPEG into Photoshop and try to recover the exposure many times you will find a mess of JPEG artifacts and horrible color issues, blues where blacks should be and massive amounts of color noise (especially in shadows). That screen is so small it makes it very difficult to accurately troubleshoot photos on scene. This happens all the time, even when you look at the back of your LCD. it is, until you get yourself in a tricky situation, a situation where the shot you took was underexposed by 3 stops (it looks very dark).
Sounds awesome right? You mean to tell me that my camera is doing all of this stuff for me when I shoot in JPEG and to top it off it saves it as a compressed file alleviating much of my space issues? Awesome…. The areas showing through the black on the left reveal the highlight blowouts from the recovery of 3 stops of exposure.
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