Yes there are multiple image settings that can be changed to produce finer quality images. From within your camera application, tap Menu and you can scroll through the various settings.
Image adjustments gives you the ability to change the following qualities of your pictures: Exposure, Contrast, Saturation, and Sharpness.
White Balance gives you the ability to fine tune your pictures based on the lighting conditions, Auto, Incandescent, Fluorescent, Daylight, and Cloudy.
ISO changes the speed of the shutter, generally the darker your environment you are taking pictures in, the higher the ISO setting should be.
Enabling Auto enhance, Auto focus, and Face detection will help produce higher quality images.