To give you a perfect picture no matter how your room is lit, new TVs automatically tweak their on-screen colors to complement say, the orange glow of incandescent lights in the evening or the bluish tint of midday sunshine. We sat with two new self-adjusting screens by day and night to see if we could notice the changes.

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Photo printing just got faster and easier. Instead of waiting until you get home, you can use Polaroid’s pocket-sized PoGo to print on the spot. Using Zink’s "zero-ink" technology—paper that contains layers of heat-activated color dye crystals a few microns thick—PoGo eliminates the clunky ink cartridges of traditional printers. The device—weighing just eight ounces and measuring 4.7 by 2.8 by 0.9 inches—goes on sale July 6 for $150.

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We live in interesting TV times. DVD players are as common as toasters. Basic Blu-ray players offer high-def flicks at prices we can (almost) afford. And now, if you can’t bother to go to the store or wait for a disc to arrive, you finally have some enticing download options.

The biggest news, of course, is the recent arrival of Roku's streaming Netflix Player, which is finally giving the company a service to match its name. The Netflix Player joins two other on-demand boxes: Vudu, which premiered last September, and Apple TV, which got upgraded to a movie-playing box in February. So, what’s the best way to go?

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Digital SLRs shoot as fast as machine guns, but all those pictures are useless if they come out blurry. Autofocus often fails in low light and with quick-moving subjects such as athletes or toddlers. We pitted two cameras that promise faster, more accurate autofocus technologies against both each other and top competitors from Canon.

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