Originally posted by Thrashercharged (because it has a better lense than what we have for wider angle shoots)
Of course, with this camera lenses can be changed to whatever angle of view suits your needs. But since this lens does that for you, and this is the main reason for using this camera, perhaps the best way to get started is put your mode dial on "P" (Program) for the camera to automatically set both shutter speed and aperture, according to the camera's light meter's reading of the scene. If the scene is too dark, like night time or indoors, using flash might needed, as well as increasing the ISO to 400, 800 or 1600, which would increase the reach of the flash. But flash is still limited for distance. If it is daylight outdoors, but a dark, cloudy day, you might need to increase the ISO also to obtain enough shutter speed for your needs. When in bright daylight, ISO 100 or 200 is generally ideal.
When in "P" mode, Pentax has a very unique feature called the Hyper System. In this mode, if you want a different shutter speed than the camera selects, you can override it to select your choice simply by making your selection by using the front finger dial. Just be sure you have adequate ISO to accommodate the range of choices you need. Then the camera will adjust the aperture to compensate so you will get the same exposure for your picture. A touch of the green button restores fully automated operation. Choosing a different aperture works in the same manner, by using the rear thumb dial, with the camera altering the shutter speed to compensate. With this system you can go ahead shooting with the camera dealing with changes in lighting as you point it here or there, but you can make different choices of your own quickly without having to first change the mode dial to Av or Tv. ISO is the setting that increases or decreases the sensitivity to light by the camera's sensor which records the photo (like film). If setting ISO too high, quality of the results could be visibly diminished. With this camera, best to stay below ISO 3200 at the very most. Every time you double ISO, you can get double the shutter speed under the same lighting conditions.