Great post over on Camera Dojo titled Understanding Exposure with the Exposure Triangle that has some excellent information on exposure and makes it easy to quickly understand exposure.
From the article:
think of the three elements of exposure as the three points of a triangle each having an equal effect on the final exposure of the image.
If the visual references isn’t quite enough, then another way to think about it is to think of a perfect exposure as the combination of the right proportion of ingredients made up of ISO, Shutter Speed, and Aperture setting. If a perfect exposure = 9, and you have equal parts of Shutter, ISO, and Aperture, then you have a good mix (3+3+3 = 9). If you need to adjust one of the ingredients, then you have to adjust one of the others to come up with the same final number (2+4+3=9), subract from one, you have to add to another to make up the difference. If you have too much of one, without substracting from another, you end up with an overexposed image. Conversly, if you take away from one but don’t add another, you end up with an underexposed image.
Jump over and read the rest of the article for some great info.
A great book that I recently picked up on the topic of Exposure is Understanding Exposure: How to Shoot Great Photographs with a Film or Digital Camera.
This book is wonderful for photographers trying to learn more about exposure. Don’t just take my word for it though…there’s been 506 reviews of this book on Amazon with an average 4.5 stars out of five.
The publisher’s description of the book is:
For serious amateur photographers who already shoot perfectly focused, accurately exposed images but want to be more creative with a camera, here’s the book to consult. More than seventy techniques, both popular and less-familiar approaches, are covered in detail, including advanced exposure, bounced flash and candlelight, infrared, multiple images, soft-focus effects, unusual vantage points, zooming, and other carefully chosen ways to enhance photographs. The A-Z format make sit easy for readers to find a specific technique, and each one is explained in jargon-free language. Top Tips for each technique help readers achieve superb results, even on the first attempt.
Check out the Camera Dojo article for a brief tutorial and pick up the Understanding Exposure: How to Shoot Great Photographs with a Film or Digital Camera for some excellent information on the topic of Exposure.
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Cool. I have always struggled with this aspect of photography. For the longest time I’ve been wanting to get a firm grasp of this so I can take better pictures. Thanks for sharing this.