Patrons of the Bridgton Twin Drive-In settle in to watch "X-Men: Apocalypse" on a cool evening.

John S. Tevanian, owner of the Bridgton Twin Drive-In, waits for patrons at the front gate.

From left, Vinny Catalano, daughter Brielle, 9, his wife, Karen, dog Tico, son Vincent, and daughter Demitria, settle in for a showing of "X-Men: Apocalypse" at the Bridgton Twin Drive-In.

One of the two large digital projectors at the Bridgton Twin Drive-In occupies a room of its own. Here, it projects "X-Men: Apocalypse" to the big screen.

John S. Tevanian, owner of the Bridgton Twin Drive-In, waits for patrons at the front gate. The drive-in is usually the first one in the area to open for the year and has two digital projectors.

A digital projector with an array of flashing lights and hard drives has replaced 35mm film at the Bridgton Twin Drive-In.

Mostly gone are the days of film reels for movie theaters, like this one seen in the snack shack at the Bridgton Twin Drive-In. Drive-in movie theaters like Bridgton, which have adapted to digital projectors, are staying open, while those like Prides Corner in Westbrook are having a hard time securing movies that aren't digital.

The digital projector at the Bridgton Twin Drive-In plays out to a large screen during a showing of "X-Men: Apocalypse."

John S. Tevanian, owner of the Bridgton Twin Drive-In, talks to a patron at the front gate. Maine, with six drive-ins, has twice as many left as any other New England state, according to Drive-Ins.com.

Prides Corner Drive-In in Westbrook is seen illuminated by car headlights at dusk. The conversion to digital projection equipment, which costs $65,000 to $75,000 per projector, has been a major hurdle for drive-ins.

The entrance to the Prides Corner Drive-In movie theater in Westbrook is seen at dusk. The drive-in has not opened this year because it has yet to convert to digital.