Attention 3D filmmakers: Here's your $300 iPhone app

Want to calculate parallax and lens separation for shooting 3D film and video? RealD has the iPhone application for you--the RealD Professional Stereo3D Calculator. It does lots of great stuff, including automatically calculating the settings for each shot that will keep parallax within preset maximums. But that's not why I'm writing about it.

The reason I'm writing about it is...well, let's do it like the voiceover for a movie trailer: "In a world where iPhone apps cost $9.99 or less, RealD has released a $299.99 iPhone app! They dared to mark it down from $300! Directed by James Cameron and featuring 10-foot-tall, blue, furry iPads that don't cost much less than RealD's application, and Munchkin-sized iPhones that cost much less, the RealD Professional Stereo3D Calculator with improve your parallax and lighten your wallet!"

It may be worth the money, but it seems expensive to me. Any bets on how soon we'll see a comparable application in the App Store for under $30?