Originally Posted by Ghost
A ski is like an upside down beam supported in the middle with a load on it. The amount of force the ski delivers to the snow varies with how much the ski is deformed from it's natural position. A ski with more camber has it's tips and tails moved further from it's cambered position and hence will be putting a larger part of the load at the tips and tails than one with little camber. A ski with camber is already transmitting or redistributing some of your weight from the midsection out to the tip and tails even when the snow is flat.
Ghost is correct. Camber is intended to compensate for the force the skier applies at the center of the ski. Think of the ski as a uniformly supported beam. For a flexible beam (ski), the reaction forces are greatest directly under the skiers foot. By cambering the ski, you distribute a greater amount of edge force to the tips and tails, relative to the force under the foot.
The critical performance attribute that ski designers are focused on is edge pressure. The actual pressure a ski edge exerts onto the snow is dependent upon multiple factors, including camber. Skier force (weight + turn dynamics), longitudinal ski stiffness, torsional rigidity, and length also play a role.