If there's one thing you don't expect to find at Photokina, it's a mouse. If there's another, it's a calculator. In some strange twist of fate, we found both in Canon's press lounge, and we couldn't possibly be more elated. The X Mark I Mouse captured our attention early last month, and we've been searching up and down to get our hands on one ever since. Nestled gently between legions of camcorders and a few dozen printers was the gem we'd be searching for, and we didn't hesitate to clear the area for a bri
