EXPOSURE TRIANGLE

     Photographs are important to us because it depicts memories. This past few days I found out that there is FOREVER, photos are forever. If photos are important to us, we could learn a things. We could make photos sharp, a blurred face doesn't really look good, take good shots when there is not much available light and we can make a good composition. Choose the right lens is key to shooting. Knowing your lenses is vital to your survival. 

WIDE   *   NORMAL   *   TELEPHOTO

  10mm          50mm                  200mm

[fisheye]

3 Exposure Triangle

1. Shutter Speed - shutter speed or exposure time is the length of time a camera's shutter is open when taking a photograph.The amount of light that reaches the film or image sensor is proportional to the exposure time. It controls the ambient light. 

2. Apperture - the aperture stop of a photographic lens can be adjusted to control the amount of light reaching the film or image sensor. In combination with variation of shutter speed the aperture size will regulate the film's or image sensor's degree of exposure to light. Typically, a fast shutter will require a larger aperture to ensure sufficient light exposure, and a slow shutter will require a smaller aperture to avoid excessive exposure. It controls he depth of field. 

3. ISO - Measures the sensitivity of the image sensor. The same principles apply as in film photography – the lower the number the less sensitive your camera is to light and the finer the grain.