National Geographic Kids
National Geographic Kids: Tricky Pics
Test your awareness of truth and illusion in visual images by viewing these six tricky photos. This resource demonstrates that you can't always believe what you see. To help you learn how to discriminate between real and fake, the...
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Photography tips.com: Digital Photography
This site from PhotographyTips.com offers an excellent and detailed definition of digital photography and many links to more useful information on the topic.