The Details: If you can guess what the Nikon Mystery Photo is, and be the first to email us the correct answer, you'll win a cash prize of $200. If there are no correct answers, we'll add $25 to the prize for every day until someone provides the correct answer, up to a maximum of 7 days. Are you up to the challenge? Think you know what it is? Send us an email with your name and phone number, along with your guess to contest@photoexpert.com