Optical Viewfinder
An optical viewfinder offers the most comfortable, accurate and efficient operating experience by showing a bright and sharp full color image through the taking lens. Since they exhibit no motion blur, judging focus during movement is easy, which can save hours of aggravation and re-takes.
Rotating Mirror Shutter
A mirror shutter is a mirror, located at an angle in front of the sensor, that continuously rotates. Half the time it reflects light up into the optical viewfinder and the other half it lets light fall onto the sensor. Thereby the mirror shutter makes the optical viewfinder possible and determines the exposure. The advantage of a mirror shutter is two-fold: on the one hand it does not exhibit the rolling shutter artifact of electronic shutters, and on the other it provides a natural motion portrayal that is exactly as it was with film cameras
The Flagship
At the pinnacle of the range is the ALEXA XT Studio (XT = Xtended Technology), featuring a quiet, adjustable mirror shutter and an optical viewfinder that provides a real-time, high contrast image with true colors. Additionally, the ALEXA XT Studio also has an internal motorized ND filter and a DNxHD license. The Studio is a direct response to cinematographers requests for a camera that perfectly combines cutting edge digital image-making with traditional elements of the film cameras they have known and trusted for generations.
Like all ALEXA XT cameras it has in-camera ARRIRAW recording, a 4:3 Super 35 sensor, Open Gate sensor mode, integrated CDL capture, LDS PL mount, included anamorphic de-squeeze and high speed licenses as well as a new, super silent fan.
ALEXA XT Studio Technical Data
Camera Type
35 format film-style digital camera with an optical viewfinder, an Open Gate/4:3/16:9 switchable active sensor
area, built-in support for the ARRI Wireless Remote System and the cmotion cvolution lens control system,
built-in motorized filter slider, Lens Data System and integrated shoulder arch
Sensor35 format ALEV III CMOS sensor with Dual Gain Architecture (DGA) and Bayer pattern color filter array.
Photo Sites
16:9
2880 x 1620 used for ARRIRAW 16:9
2880 x 1620 down sampled to 1920 x 1080 for HD-SDI, ProRes HD 16:9 and DNxHD HD 16:9
2868 x 1612 down sampled to 2048 x 1152 for ProRes 2K 16:9
Photo Sites
Open Gate
3414 x 2198 used for ARRIRAW Open Gate
Operating Modes
Mirror shutter on or off. Switching takes approximately 3 seconds. 16:9, 4:3 or Open Gate sensor modes.
Switching takes approx. 60 seconds. 4:3 only available for ARRIRAW and ProRes 2K recording. Open Gate
only available for ARRIRAW recording.
Regular or High Speed mode. Switching takes approx. 40 seconds. High Speed mode is only available for
16:9 sensor mode.
Frame Rates
16:9
ARRIRAW
Mirror shutter on 0.75 – 60 fps
Mirror shutter off 0.75 – 120 fps
ProRes HD
Mirror shutter on 0.75 – 60 fps
Mirror shutter off 0.75 – 120 fps
ProRes 2K
Mirror shutter on & off 0.75 – 60 fps
DNxHD HD
Mirror shutter on 0.75 – 60 fps
Mirror shutter off 0.75 – 120 fps
Frame Rates
4:3
ARRIRAW
Mirror shutter on 0.75 – 48 fps
Mirror shutter off 0.75 – 90 fps
ProRes 2K
Mirror shutter on & off 0.75 – 48 fps
