Beginning with the iPhone 6s and iPhone 6s Plus, the stock Camera app is capable of recording at 4K (UHD-1) resolution. While 4K video will take up a significant amount of storage space the quality is noticeably sharper on a 4K-capable display.
iPhones starting with the iPhone 6 and iPhone 6 Plus can playback slow motion video at just one eighth (12.5%) of normal speed. To achieve this effect, video is actually recorded at 240 frames per second (fps) and played back at normal speed (30 fps). While slo-mo can be recorded at 120 fps in full HD (1080p), the higher frame rate of 240 fps is captured at 720p HD resolution.
Starting with the iPhone 6s and iPhone 6s Plus the stock iOS Camera app is capable of recording 4K resolution video at 30 frames per second (fps). While the increased video resolution at UHD-1 can increase picture clarity on compatible displays, there is a serious trade-off with storage space.
The iPhones released in fall 2015 include 4K video recording in the stock Camera app. There are many differing definitions of what 4K means, depending on the company or product.
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Reports indicate Apple is poised to offer significant upgrades to the next generation iPhone camera. The iPhone 6s is expected to launch this fall, packing hardware and software upgrades into the same form factor as the existing iPhone 6. Mobile photography is clearly a priority for Apple considering the award winning "Shot on iPhone 6" campaign that has swept the globe. Camera upgrades have always been highlights of Apple keynote presentations, even when the change does not involve increasing the number of megapixels. This is all set to change according to documents leaked on Chinese site Weibo.
