Fstoppers published a controversial video “The iPhone 6s Takes Better Video Than My Professional Nikon DSLR” (the DSLR in question was the Nikon D750). They basically compared the 4k footage from the latest iPhone 6s (down-sampled to 1080p) to the 1080p footage from the Nikon D750. Their conclusion? The iPhone won:
“The point of the video wasn’t to say that the iPhone was a better camera than a professional DSLR, it was meant to inspire photographers to use the gear they currently own to create beautiful images. Obviously the iPhone is infinitely worse than any current DSLR for stills but surprisingly it appears to be a far better video camera than my $3000 DSLR when there is enough light present.”