A new app promises to let iPhone users shoot video in 2K, film-quality definition.
Ultrakam - which works on the 5s, 5c, and 5 models - produces iFrame or M-JPEG codecs at 2240 x 1672, around 75% higher than HD.
The app also works with iPad mini and iPad with Retina display but make sure you have plenty of memory free - a minute of footage will take up a whopping 3GB.
Hassan Uriostegui, the developer behind Ultrakam, said: "My vision is to create the most powerful tools for the next generation of content creators and to integrate mobile devices as a professional tool in content production."
The app is targeted at serious filmmakers and was developed with their input and feedback.
Uriostegui said: "Ultrakam was designed working closely with indie filmmakers and we added what they asked for: time-lapse and slow motion.
"This way, directors can easily switch between live action, time-lapse, and slow motion recording with maximum quality and control."
There's also a few other features like slow motion capture that will take advantage of the iPhone 5S' 120fps (60fps on the iPhone 5).
Videos can be slowed up to 10X.
There's also a host of editing tools that allow you to colour correct and generate stills.
All this can be had for a very reasonable £4.99 from iTunes.