Chuck Fryberger has an expensive camera and shot “Core” in 35mm Ultra High-Definition, making it the first climbing movie that made me wish I had a bigger TV. This is a solid film, following some of the world’s strongest climbers as they battle routes that are at their limits. Fryberger, as a filmmaker, knows what he’s doing — when to play high-energy music as his tracking shot follows a car ripping down a dirt road in South Africa on the way to Rocklands, when to turn off the music so we can listen to a climber nervously breathe and scrape his or her way up a boulder problem, and how to find the right angles. Two highlights in this film, for me: A segment on BJ Tilden, who is not a sponsored climber, but a full-time carpenter in Wyoming, who climbs as hard as a sponsored climber; and when Hueco Tanks legend Rick Oliver shares this bit of philosophy: “There’s a leisure class at both ends of the socioeconomic spectrum. You can have a lot of money and no time, or a little money and a lot of time. And it’s very, very fun to be on either end of it.” Also great: The film can be e-mailed to you, for $19.95, if you don’t want to spend the $29.95 for the DVD or $39.95 for the Blu-Ray.