November 2003
Beginner to intermediate
712 pages
21h 47m
English
Content preview from Real World Digital Photography, 2nd editionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Improving Image Structure
Reducing Digital Camera Noise
In an ideal world we would only take pictures in well-lit situations and use the camera's lowest ISO possible. But we don't live in a perfectly illuminated world and many important events take place in less-than-ideal lighting conditions. Sunset scenes, candlelit dinners, and theater presentations are all examples of where the low light will force you to increase the camera's ISO. As we discussed in Chapter 3, “How a Digital Camera Works,” you can increase the ISO or light sensitivity of the image sensor, which adds a gain to the signal, which is often visible as increased noise. Sometimes we also make exposure mistakes and underexpose the image. When you lighten the image up in Photoshop, ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.