There's a big frame in Polaroid's Photokina booth -- a giant, blown up version of the iconic white border that graced the company's instant photos for so many decades, beckoning passersby to stand behind it and pose, like muscle man cutouts at a traveling carnival. Directly to its right, attendees stand around a row of product from the company aimed at recapturing some of the nostalgia inherent in the Polaroid name. It's nothing compared to the gathering at a booth 20-or-so feet across the room, where international guests stand fascinated by the Instant Lab, an accordion-style gizmo that transforms iPhone images into instant photos, utilizing film produced at the last remaining Polaroid
