A Picture Perfect Digital Camera

Three years ago, Sony revolutionized the digital camera business with its digital Mavica. Compared with other sleek, brushed-metal models that could readily slip into a shirt pocket, the Mavica was more like a vintage Brownie. It was a big, ugly, plastic box, ungainly to hold and tote. But it boasted one convenience that none of the others had: It stored pictures on ordinary 3 1/2-in. floppy disks that could be read by any computer.

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