I don't believe that any of the blurry UFO photos are real, for a very simple reason--they all resemble a slightly more advanced version of the the then-current technology and style. It seem very unlikely a spacecraft would fit the gestalt of the decade during which it crashed into earth.

There is a version of this to keep in mind when listening to startups make certain types of extraordinary claims.

(As a random aside, I went back and looked at some old photos of purported UFOs and real aircraft. A hat-tip to the designers of the SR-71 for creating the only aircraft that still manages to look super-futuristic 50 years later.)