Paull & everyone else: Just for reference, here is the "Polaroid" look I'm referring to - the look that would be best to help viewers of the logo have instant recognition that the photo is actually a photo:
http://tr.im/20kh#62 by Sh1 is the closest to "Polaroid reality" so far - which is one of the reasons it's ranked high.
The reason the Polaroid concept is important is because the photograph is pretty much blank - so the photograph element can easily look just like a piece of paper, or something other than a photograph.
Hope this helps. And apologies if this is becoming too much information(!).