In extreme lighting conditions, either bright or dark, try using Spot metering, and in Av mode, you could use Exposure Compensation to trick the camera into getting some faster shutter speed. But RAW does not give you anything, you have to rip it out of the file, kicking and screaming, in your processing. The RAW editor just allows you to edit the lighting up or down a bit without adding noise that you would get when editing a jpg. 









