Basics of Cameras and Exposures

Over the past year, I’ve been spending a lot of time learning and experimenting with digital cameras. I got a Nikon Coolpix P80 last spring (you can read review of the Coolpix P80 on Associated Content), and I recently upgraded to the Canon t1i and purchased a variety of lenses to go along with it.

I wrote up a series of short articles on Associated Content explaining the basics of exposure. If you’re starting out with photography and feel that you’re ready to break out of the “auto” mode on your camera, they’re a good read. The more you read about photography and how everything works together to create an image, the better you’ll be.

What Does the Aperture Setting of a Camera Do? The aperture is the size of the hole that lets light into your camera. Bigger hole = more light, smaller hole = less light. But, this also affects the depth of field – how much of an image will be in focus. Read the article for more details.

What Does the Shutter Speed Setting of Your Camera Do? The shutter speed is how long light is allowed to shine on your cameras image sensor (or film, if you’ve got a film camera). Keeping the shutter open longer allows in more light, and keep it open for a shorter period of time allows in less light. But… this also affects whether your picture will be blurry or not. Read the article for more details.

What Does the ISO Setting On Your Digital Camera Do? The ISO rating determines how sensitive your camera’s image sensor is to the light coming in. Turn the rating up, and your sensor will be more sensitive and create a brighter image. But, this also creates more “noise” – little pixelly speckles that can ruin your photo. Read the article for more details.

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4 Comments to “Basics of Cameras and Exposures”

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