PicLens is an immersive full-screen experience for viewing photos on the Web. This is a pretty slick little tool for your Web browser that allows you to view images in full screen. Basically if you are visiting a page with an image, or series of images, the PicLens plugin allows you to click on the image and have it grow to full screen. Just mouse over an image and click the arrow icon to engage the tool. It darkens the screen and the image grows full size to fill the screen. This is great for presentations and classroom demonstrations and such. Throw some images into your favorite photo sharing site, arrange them in the order you like, and you have an instant, low overhead, slide presentation. An example can be found at "timlauer.org".
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