'X-Men: Days of Future Past': First look at full Sentinel robot

You've got to love director Bryan Singer. He just keeps tweeting photos from the set of "X-Men: Days of Future Past." He's shared pictures of many of the movie's cast in costume, and even some action sequences. In the latest photo, he's standing next to a gigantic Sentinel robot, which is at the core of the movie's conflict.

Singer tweeted the picture with a message reading, "Here's to the next 50 years," a reference to the Trask Industries viral video released Tuesday (July 30).

The photo shows just how large the Sentinels are going to be, with Singer, who is 5'10", only reaching its knee. In the movie, the Sentinels are wreaking havoc on Earth in the future, leading Wolverine ( Hugh Jackman) to be sent back in time to work with the mutants of "X-Men: First Class."

"X-Men: Days of Future Past" is set for theaters May 23, 2014. Check out the full picture below:

Photo/Video credit: Twitter