A couple of years ago a bought an actual negative of a wire photo taken during a raid of an illegal Chinese cardroom. I could barely recognize the there was a crest and seal in the photo. The photo to the right is about the actual size 2"

I believe the negative was a 2x2. It contained a ton of information

The second chip is from the picture to the right. I scanned at 4800 dpi. As you can see there was amazing clarity