The one aspect of the camera which determines the light delivery on your pictures is exposure. Exposure in photo is the lights quantity that reach a film. It can be determined by shutter speed and lens aperture. The range of exposure can determine the picture effect. The setting of exposure on photograph includes of aperture, ISO speed and shutter speed camera. All of them are called as exposure triangle. The triangle of exposure can be said as the basic learning of DSLR camera.
ISO in film camera refers to how sensitive the film against to the light. The ISO in DSLR camera refers to the sensor setting instead of film. If you move the ISO speed to the lower number, it will sensitive to the light. The low setting of ISO speed will be high to the bright midday sun. The setting number is about ISO 100 or 200. Sometimes, the wrong ISO speed and the light setting will make the digital noise on your photo.
Shutter speed refers to time amount that the shutter on the camera will open for when you take a shot. If you set the short speed on the camera, you would get less light that hit the sensor. It can also have the “freezing” motion effect. if you set a long shutter speed, you would get more light to hit the sensor. It also will make any movement is appeared blur on the direction that was moved. For some reason, that is a desirable effect depends on what you are trying to achieve.
The aperture on a camera refers to the opening size in the lens that let the lights hit the sensor. If you set the aperture in wide, it allows more lights in, and narrow allows less lights in. The measured size on opening is f/1.4, f2.8, f/4, f/5.6, f/8, f/16, f/22 etc.
If you set the aperture in the small number, you will get the large opening. The aperture allows you to control the field depth.
If you want to create the good picture with good measure of exposure setting, you can follow these tips. Try to avoid the over contrast situation. You should try to work in the first 2 hours after the sunrise and before the sunset. Some of the photographers claim that it is a perfect time to get the good picture. It would be better if you don’t shoot the objects at high noon. The daylight changes constantly and often create the more dramatic picture.