There's no direct setting that adjusts Exposure Compensation separately like a DSLR would have. The Spark allows you to manually change only ISO and Shutter Speed (not Aperture) which in turn affects the EC value. Manual selection of proper White Balance is helpful too. You can use the Exposure Bracketing feature (AEB) in tricky photo situations. ND filters have a role in video as well. Using all of the above features the Spark has handled every situation I've come across
Most important to understand and use the on-screen histogram. It's nearly impossible in direct sunlight to rely solely on the phone's display.