I'm beginning to wonder if Canon is being taken over by reincarnated denizens of the 1950s auto industry. Make a few trivial changes (bigger tail fins!), slap a new model number on it, and roll it out the door as a "new" fall model. At least, it feels that way after recently testing a couple of Canon printers that are nearly identical to their predecessors. The Canon Pixma MP610 is only slightly changed from last year's MP600, and now the Pixma iP4500 Photo Printer ($129.99 direct) has changed even less from last year's iP4300 (there was no iP4400). At least the MP610 kept the same price as the model it replaced. In a move that's counter to every expectation for anything related to computers, the iP4500 offers no discernible improvements over last year's model while upping the price by 30 percent.