The ARRI ALEXA LF (Large Format) is a groundbreaking addition to ARRI’s ALEXA camera family, designed to meet the growing demand for full-frame cinematography. With its large-format sensor and renowned ARRI image quality, the ALEXA LF is a powerhouse for filmmakers aiming to create immersive visuals with unparalleled depth and detail.
Large-Format 4.5K Sensor
The ALEXA LF is built around a large-format 4.5K sensor, offering a resolution of 4448 x 3096. This larger sensor size delivers a stunningly cinematic look with exceptional sharpness, increased depth of field control, and beautiful bokeh. It captures the grandeur of wide vistas while maintaining detail in close-ups, making it a versatile choice for a wide range of projects.
Signature ARRI Look
With its renowned color science, the ALEXA LF produces the natural, film-like skin tones and rich color reproduction that ARRI cameras are famous for. The combination of the large sensor and ARRI’s image processing creates visuals that feel both epic and intimate, perfectly suited for high-end cinematic productions.
High Dynamic Range
The ALEXA LF offers a wide dynamic range, capturing 14+ stops to retain detail in both shadows and highlights. This ensures excellent performance in challenging lighting conditions and supports HDR workflows, providing filmmakers with incredible flexibility in post-production.
Native 4K Recording
The ALEXA LF records native 4K, meeting the technical specifications of major streaming platforms and theatrical distribution requirements. Its high-resolution output is complemented by ARRI’s sophisticated image processing, ensuring visually stunning results.
Versatile Lens Compatibility
The ALEXA LF features ARRI’s LPL (Large Positive Lock) lens mount, specifically designed for large-format lenses. It is compatible with ARRI Signature Primes and a wide range of third-party full-frame and anamorphic lenses, providing cinematographers with extensive creative options.
ARRI Signature Primes
To complement the ALEXA LF, ARRI developed the Signature Prime lenses, which are optimized for large-format cinematography. These lenses deliver unmatched optical performance with a smooth focus roll-off, neutral color rendition, and creamy bokeh, enhancing the cinematic potential of the camera.
Robust Build and Workflow Integration
Like all ARRI cameras, the ALEXA LF is built for durability, capable of withstanding the demanding conditions of professional film sets. Its modular design allows for flexible rigging, and it integrates seamlessly into established ARRI workflows, supporting ProRes and ARRIRAW formats for maximum post-production compatibility.
Advanced Frame Rates
The ALEXA LF supports a wide range of frame rates, from 0.75 fps to 150 fps. This flexibility makes it ideal for everything from high-speed action sequences to dreamy slow-motion shots, giving filmmakers complete control over their storytelling pace.
Professional Audio and Connectivity
Equipped with professional audio inputs and outputs, timecode synchronization, and multiple connectivity options (including SDI and Ethernet), the ALEXA LF fits effortlessly into complex production environments.
Exceptional Low-Light Performance
With its advanced sensor design and noise reduction technology, the ALEXA LF excels in low-light conditions. Whether shooting in natural moonlight or dimly lit interiors, it delivers clean, detailed, and cinematic footage without compromising quality.
| Feature | Specification |
| Model | ARRI ALEXA LF |
| Sensor Type | Large-format ALEV III CMOS sensor |
| Sensor Dimensions | 36.70 mm x 25.54 mm (1.444″ x 1.005″) |
| Active Pixels | 4448 x 3096 |
| Photosite Pitch | 8.25 µm |
| Dynamic Range | 14+ stops |
| Exposure Index (EI) | 160 to 3200 (base EI 800) |
| Recording Formats | ARRIRAW (12-bit uncompressed), Apple ProRes (4444 XQ, 4444, 422 HQ) |
| Recording Resolutions and Frame Rates | LF Open Gate (4448 x 3096): ARRIRAW 0.75 – 90 fps, ProRes 0.75 – 60 fps; LF 16:9 (3840 x 2160): ARRIRAW 0.75 – 90 fps, ProRes 0.75 – 60 fps; LF 2.39:1 (4448 x 1856): ARRIRAW 0.75 – 150 fps, ProRes 0.75 – 100 fps |
| Lens Mount | LPL mount; compatible with PL-to-LPL adapter |
| Viewfinder | EVF-2; OLED display, 1920 x 1080 resolution |
| Built-in Filters | Optical low pass, UV, and IR filters |
| Audio | 2x 5-pin XLR for analog line/mic inputs; 4-channel, 24-bit, 48 kHz recording |
| Power Input Voltage Range | 20.5 to 34 V DC |
| Power Consumption | Approximately 90 W |
| Dimensions (W x H x L) | 170 mm x 190 mm x 220 mm (6.7″ x 7.5″ x 8.7″) |
| Weight | Approximately 7.8 kg (17.2 lbs) |
| Operating Temperature Range | -20°C to +45°C (-4°F to +113°F) |
| Relative Humidity | Up to 95%, non-condensing |
| Additional Features | Integrated Wireless Video Transmission, Support for ARRI Electronic Control System (ECS), WiFi Connectivity for Remote Control |
