ARRIRAW data produced from an ARRI ALEXA can be considered a digital version of camera negative. It delivers uncompromised image quality and provides the highest achievable resolution, the most postproduction flexibility and raw data archiving. ARRIRAW is the only format that retains the camera's natural color response and great exposure latitude as uncompressed and unprocessed sensor data. With the introduction of the ALEXA XT series, ARRIRAW data can be recorded directly in the camera, without the need for an external recorder, which makes using ARRIRAW as your chosen format easier than ever before.
Like film negative, ARRIRAW data has to be developed – or rather processed – in order to convert the single channel image, which represents the raw Bayer pattern sensor readout, into a color image suitable for normal viewing. The originally recorded raw data remains pristine, always providing the flexibility to go back and refine the results. This makes ARRIRAW the perfect format for digital cinematography and high quality visual effects production.
|Sensor raster:||2880 x 1620 active pixels (16:9)
2880 x 2160 active pixels (4:3)
|Image aperture:||23.76 x 13.37 mm / 0.935 x 0.526" (16:9)
23.76 x 17.82 mm / 0.935 x 0.702" (4:3)
|Output resolution:||up to 2880 x 1620 (16:9)
up to 2880 x 2160 (4:3)
|Speed range:||0.75 - 120 fps; (16:9)
0.75 - 48 fps; (4:3)
all speeds adjustable with 1/1000 fps precision
|Format:||12bit logarithmic uncompressed ARRIRAW|
Without the XR Module upgrade, an ALEXA can output ARRIRAW 16:9 at 0.75 – 60 fps via HD-SDI/T-Link.
4:3 sensor mode is available on the ALEXA XT Plus, ALEXA XT M, ALEXA XT Studio, ALEXA Plus 4:3, ALEXA M and ALEXA Studio.
A look at the new XR recording module on the ALEXA XT which now allows ARRIRAW recording and compressed formats in-camera to Codex Capture Drives.