Mount:

PL, LPL, EF

Media:

Codex Compact Drive

Container:

MXF (OP1a)

Codecs:

ARRIRAW

13-bit log (requires ARRI Imaging SDK or ARRI Reference Tool (ART) for de-bayering) (CRC32C checksum recorded as part of the image header)(Can be compressed by upto 40% using Codex High Density Encoding (HDE) using ARRIRAW HDE Transcoder app)

Apple ProRes

LogC4 by default (12-bit YCbCr) (VBR codec, thus remaining record time idicated by camera can vary)

NB! (When shooting 4.6k 16:9 ProRes, photosite binning is used)

Notes:

Swiching between codecs may require camera reboot

https://www.arri.com/resource/blob/288774/0a605ecd65d0da6f31e347566e73c09a/arri-alexa-35-supporting-tools-and-software-data.pdf

Sensor:

ARRI ALEV 4 CMOS (with Bayer pattern colour filter array)

Size:

27.99mm x 19.22 | 33.96mm diagonal

Photosite size:

6.074µm (slightly smaller than 100x red wavelength @ 665nm, blue @ 470nm)

Notable Features:

Pre-recording: The maximum available duration of Prerecording is determined by the set combination of sensor frame rate, recording codec and sensor mode, but can also be set by the user within these limits. [p.55 Alexa 35 User Manual, 2nd May 2023]

Alexa 35 features Wireliess Video Optimised LogC4 for SDI out to wireless transmitter. At the end of the transmission, the WVO LogC4 signal needs to be decoded

with a corresponding WVO LogC4 decoding LUT before applying any additional color transforms like LUTs or CDLs