I have just purchased a Dell 7440. Amazed by the machine and its screen resolution but like my MacBook Retina, it too has a bad HD webcam display. Is there someway to change the brightness and the contrast. I downloaded the webcam central application but in the picture mode it grey out the brightness and contrast settings and doesn't allow me to set it. I have read up on what webcam it has and in all honesty it is capable of a much better output. Please help me adjust the brightness and contrast level.