Wednesday, September 30, 2015

Guilty pleasure

Something old

Your shoes


Someone you love


Something you bought




Something you're reading

In your bag

Close up

Where you sleep

Wednesday, September 16, 2015


Cambridge in Color: Camera Exposure

  • A photograph's exposure determines how light or dark an image will appear when its been captured by your camera.
  • 3 camera settings determines exposure; aperture, ISO, and shutter speed.
  • These 3 settings are also known as the exposure triangle.
  • You cant control the natural light in your photograph but you can use the exposure triangle to make different combinations of exposure.
  • Aperture means depth of field. It controls the area over which light can pass through your camera lens. Its specified in terms of an f-stop value where the area of the opening increases while the f-stop decreases. Every time the f-stop value halves, the light collecting area quadruples.  
  • ISO speed means image noise. It determines how sensitive the camera is to incoming light.  
  • Shutter speed means motion blur. The faster the shutter speed the less exposure time. When the exposure time doubles, the amount of light entering the camera doubles. For example a shutter speed of 1-30+ seconds is typically used for night shots and low lit pictures on tripods. Which is much different from a shutter speed of 1/1000- 1/4000 which is used to freeze extremely fast and take an up close subject motion.