February 2012
Beginner to intermediate
192 pages
8h 9m
English
book
iPhoto ’11: The Macintosh iLife Guide to using iPhoto with OS X Lion and iCloud
by Jim Heid, Michael E. Cohen, Dennis R. Cohen
Content preview from iPhoto ’11: The Macintosh iLife Guide to using iPhoto with OS X Lion and iCloud
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Reading a Histogram
A histogram is a bar graph that shows how much black, white, and mid-tone data a photograph has. Pure black is on the left, pure white is on the right, and the mid-tones are in between. iPhoto displays a color histogram that breaks this information down into an image’s three primary-color channels: red, green, and blue.
Beneath the histogram is a set of sliders that let you change what iPhoto considers to be pure black, pure white, or mid-tone values.
A Sampling of Histograms
This properly exposed shot has a good distribution of dark, bright, and mid-tone areas.
This overexposed shot has very little data in the blacks; everything ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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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.