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Canon EOS 70D Digital Field Guide by Charlotte K. Lowrie

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Chapter 3: Working with Exposure

Photographers often talk about exposure. But what does exposure mean? In a strict sense, exposure is the amount of light that falls on a light-sensitive surface such as the sensor in your EOS 70D. In the best of worlds, the amount of light will also be the correct amount to create a good exposure that retains details in the highlights and shadows and that has pleasing contrast. In real life, however, exposures cover a broad range. Exposures can be creative, challenging, or just bad. One thing is certain, though — exposure is one of the things you want to get right.

In this chapter, I discuss exposure from a workflow perspective, including goals, exposure modes, the camera’s metering system, and how to evaluate and modify exposure when necessary. The new Multiple exposure and High-dynamic range (HDR) shooting options are also covered.

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Regardless of the light, the 70D offers full control to get excellent exposures, with details in the highlights and shadows, as shown here. Exposure: ISO 200, f/5.6, 1/160 second.

Setting Exposure Objectives

If you are a new photographer, then I recommend adopting a goal for your photography — to get the exposure right in the camera with every shot. That is my goal, and it is the goal of most professional photographers. I emphasize this because many photographers are content to fix exposures later in Photoshop. ...

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