Okay Nikon owners, stop laughing at your 5D Mark III cronies for their leaky problem. That might be a drip in the pail next to your own worries -- namely, possible "lock-up", focus and viewfinder hitches on your D800 or D4. Nikon verified that a "small number" of units of both DSLRs can lock up and become unresponsive, but until there's a permanent patch you can prevent this by disabling both highlight and RGB histogram displays. The company also verified that a
