The NEX-IFR5 also allows the use of compatible media, file naming conventions, metadata and the RAW workflow used by Sony's PMW-F55 and PMW-F5 CineAlta 4K cameras.

ENGADGET: Sony brings 4K RAW to NEX-FS700 camcorder courtesy of IFR5 add-on

Using the latter system, the PMW-F5 is capable of grabbing up to 120fps slow motion RAW HD video, while the PMW-F55 can capture 240fps at 2k, putting it squarely in Epic-X territory.

ENGADGET: Sony goes Red-hunting with PMW-F55 and PMW-F5 pro CineAlta 4K Super 35mm sensor camcorders

Having seen some of its high-end cinema camera thunder stolen by the likes of Red and Arri, Sony has just launched a pair of CineAlta PL-mount cameras with brand new Super 35mm sensors: The PMW-F5 and PMW-F55.

ENGADGET: Sony goes Red-hunting with PMW-F55 and PMW-F5 pro CineAlta 4K Super 35mm sensor camcorders

Though both pack 4K CMOS imagers, there are some major differences -- the higher-end PMW-F55 has a global shutter, wider color gamut and can capture 4k, 2k or HD video internally, while the PMW-F5 records 2k and HD natively with a rolling shutter (4k requires an optional RAW recorder, as discussed below).

ENGADGET: Sony goes Red-hunting with PMW-F55 and PMW-F5 pro CineAlta 4K Super 35mm sensor camcorders