Gordon, as I mentioned, Auto WB works for most regular shots, but is not perfect all the time. That is why Canon (and every digital camera) have other choices.
RAW is capture format that allows the most corrections after the fact.
To some degree, over and under exposures, different contrast, different color temp ( i.e., WB), color saturation and others can be altered from what was set on the camera when you shot a photo.
For ex&le, when you overexpose a J-peg, it is difficult to fix compared to a RAW file. You can also store RAW files on a CD-ROM like it was an original (i.e., a digital negative).
The disadvantage is that a RAW file is bigger than a compressed J-Peg, and takes up more room on a CF card. Plus you have to use the Canon RAW developer (File Viewer Ulitity) to process the images before you can take them into PhotoShop. The File Viewer Utility is where alll the alterations to a RAW file can be done.
So, if you want ultimate quality, with the most flexability to alter it later, then RAW is the way to go.
RAW is capture format that allows the most corrections after the fact.
To some degree, over and under exposures, different contrast, different color temp ( i.e., WB), color saturation and others can be altered from what was set on the camera when you shot a photo.
For ex&le, when you overexpose a J-peg, it is difficult to fix compared to a RAW file. You can also store RAW files on a CD-ROM like it was an original (i.e., a digital negative).
The disadvantage is that a RAW file is bigger than a compressed J-Peg, and takes up more room on a CF card. Plus you have to use the Canon RAW developer (File Viewer Ulitity) to process the images before you can take them into PhotoShop. The File Viewer Utility is where alll the alterations to a RAW file can be done.
So, if you want ultimate quality, with the most flexability to alter it later, then RAW is the way to go.