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Canon Lenses: From Snapshots to Great Shots by Jerod Foster

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1. The Canon Lenses

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ISO 100 • 1/500 sec. • f/2.8 • 200mm

Top seven considerations

Photography wouldn’t be much without lenses. Sure, you can make images without them, but if you want something more than just a blob of light and color, lenses come in quite handy. All you really need to make images is light, a way to focus the light, and something to capture or fixate the light. A lens’s basic function is to channel a reflection of light through a number of pieces of glass (referred to as elements) and project it on the sensor or film. But lenses do so much more than just focus light.

Used well, they help bring our creative vision to some sort ...

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