The iPhone 6s shoots 4K video that, when downscaled, is superior to the 1080p video from a Nikon D750 DSLR setup costing between $3,000 and $4,000, according to a recent comparison.
The 6s did vastly better in terms of color, contrast, detail, and bitrate than a D750 paired with a Tamron 24-70mm f/2.8 lens, Fstoppers discovered. For the test, the D750 was locked at 35 millimeters, ISO 100, and an f/8 aperture, with neutral processing settings.
The D750 is still said to have a number of advantages in video, including better low-light performance, a lens mount, and the ability to capture shallow depth-of-field. The camera is also naturally superior in still photography.
4K support remains a relatively rare feature in both smartphones and DSLRs. Companies like Canon, Sony, and Samsung have support in some products, but the option is completely missing from Nikon cameras.
iPhones were incapable of capturing 4K until this year, when Apple upgraded the rear cameras on the 6s and 6s Plus to 12 megapixels. The 6s Plus has the additional benefit of optical image stabilization, something that often commands a high premium in the DSLR world.