ALEXA Mini LF
A complete large-format camera system
The ARRI large-format camera system meets and exceeds modern production requirements, delivering unprecedented creative freedom. Based around a large-format 4.5K version of the ALEXA sensor, the system comprises the ALEXA LF and ALEXA Mini LF cameras, ARRI Signature Prime lenses, LPL lens mount, PL-to-LPL adapter, and Lens Data System LDS-2. These system elements have been designed to take full advantage of the enlarged sensor, while also o ering compatibility with existing lenses, accessories, and work ows.
Pulling audiences into the image
ALEXA large-format images are truly immersive, heightening emotion and intensifying character with an intimate, three-dimensional feel
that draws the viewer in further. Wide shots and landscapes are rendered in compelling detail, and close-ups give faces an amazing sense of presence, while still being kind to skin tones.
Large-format look, with ALEXA image quality
Featuring a sensor slightly larger than full frame, ALEXA large-format cameras record native 4.5K with ARRI’s best overall image quality. This allows lmmakers to explore their own take on the large-format look, with improvements on the ALEXA sensor’s famously natural colorimetry, pleasing skin tones, low noise, and suitability for High Dynamic Range (HDR) and Wide Color Gamut (WCG) work ows. The combined feature sets and form factors of the two cameras, along with versatile recording options, encompass all on-set requirements.
Large format, small camera
Combining the compact size and low weight of the popular ALEXA Mini with the large-format ALEXA LF sensor, ALEXA Mini LF is a go-anywhere camera that has a small footprint, but delivers big images.
Recording the same formats as ALEXA LF, but to the new, state-of-the-art and cost-e ective Codex Compact Drive, ALEXA Mini LF is a robust and reliable camera that features internal MXF/ARRIRAW and MXF/Apple ProRes recording, three internal motorized FSND lters, 12 V power input, extra 12 V and
24 V accessory power outputs, compatibility with ALEXA Mini accessories, additional user and lock buttons, improved WiFi, built-in microphones, easier access to connectors and media, and a new MVF-2 high-contrast HD viewfinder.
Versatile viewinder and flip-out monitor
At the heart of ARRI’s new MVF-2 view nder for the ALEXA Mini LF are the same high-contrast HD OLED display, color science and ARRICAM eyepiece as in ALEXA LF’s EVF-2 view nder, allowing optimal judgement of focus, dynamic range and color on set. In addition, the MVF-2 features a large, 4” ip-out monitor that can display the image or the camera menu, providing maximum exibility for di erent camera con gurations. The MVF-2 can be used on either side of the camera and connects via a new, exible, and reliable CoaXPress VF cable that has a reach of up to 10 m (33 ft) for remote camera operations. It features a re ned user interface,
a built-in eyepiece lens heater for de-fogging, and a built-in headphones connector.
Full studio spec and high speed
ALEXA LF is a classic, studio-style camera that builds on the legacy of all ALEXA models before it. Able to record multiple formats to SXR Capture Drives or SxS PRO+ 256 GB cards, including uncompressed ARRIRAW at up to 150 fps for beautiful slow motion, ALEXA LF o ers a full feature set and exceptional on-set versatility.
With a built-in wireless video transmitter, as well as ARRI ECS and WiFi radios, ALEXA LF needs fewer external boxes and cables than other studio cameras, allowing for less cluttered camera con gurations and faster setup times. The three independent MON OUT outputs accommodate a wide range of on-set monitoring options.
A high-quality viewfinder for critical focusing
Robust, reliable, and ergonomically designed, the EVF-2 view nder was specially developed for ALEXA LF. The OLED display o ers full HD resolution and high
contrast, improving the operator’s ability to judge focus, dynamic range, and color.
A glass eyepiece, based on the proven ARRICAM design, delivers a clean, distortion-free image through its wide exit pupil, allowing freedom of movement for the operator. The EVF-2 also includes ARRI’s latest color science, which gives more accurate color rendition, a better match to on-set monitors, and stable color balance.
Versatile recording formats
The ALEXA large-format camera system uses the largest sensor of any full-frame cinema camera on the market. Maintaining the ALEXA family’s optimal photosite size for best overall image quality results in a 4448 x 3096 picture, which can be recorded in full using LF Open Gate recording formats. Various LF 16:9 formats provide a smaller image circle to maximize lens options while meeting 4K deliverable standards, and an LF 2.39:1 mode combines a cinematic widescreen image with high frame rates.
Organic images full of life and emotion
Accompanying the ALEXA LF and ALEXA Mini LF are 16 large-format ARRI Signature Prime lenses, ranging from 12 mm to 280 mm, and tted with the ARRI LPL mount. While the Signature Primes exemplify state-of-the-art optical precision, they have been designed to render organic, emotionally engaging images, gently softening and texturizing the large format with natural skin tones and creamy bokeh. A fast T-stop of T1.8 facilitates shallow depth of eld and the smooth focus fall-o gives subjects heightened presence in the frame.
The ARRI Signature Prime range is the rst cine lens series to feature machined magnesium lens barrels, making the optics incredibly lightweight and robust. They are also the rst to incorporate ARRI’s next-generation LDS-2 Lens Data System, with high data rates and absolute encoders for fast initializing. LDS-2 extends the possibilities of lens data and is being licensed to other lens and camera manufacturers.
Compatibility of Signature Prime lenses
ARRI Signature Prime lenses are equipped with the LPL (Large Positive Locking) lens mount, a key element of ARRI’s large-format camera system. The wider diameter and shorter ange focal depth allow LPL lenses to be small and lightweight, with a fast T-stop and pleasing bokeh—a combination of features
that would not be possible with the old PL lens mount.
ARRI shares LPL speci cations openly and free-of-charge across the industry, in order to establish the LPL lens mount as the new standard interface between cameras and lenses. ARRI LPL lens mounts are available for ALEXA 65, ALEXA LF, ALEXA Mini LF, ALEXA Classic/XT/SXT, ALEXA Mini and AMIRA cameras.
In addition, third parties already o er LPL lens mounts for cameras, director’s view nders, and lens testing tools, so ARRI Signature Primes and other LPL lenses can be universally used.
Lens options for ARRI large-format cameras
Optimized for large-format lenses, the LPL lens mount tted to ALEXA LF and ALEXA Mini LF cameras accepts ARRI Signature Primes, ARRI Rental DNA LF and 65 format optics, and third-party LPL lenses. The PL-to-LPL adapter, which attaches securely to the LPL lens mount without tools, o ers backwards compatibility with all PL mount lenses, be they Super 35 or full frame. LDS-2 or /i lens metadata is accessible via the LPL mount, and LDS-1 or /i via the PL-to-LPL adapter. ARRI’s Frame Line and Lens Illumination Tool, available in the Learn & Help/Tools section of the ARRI website, illustrates how much of the large-format sensor is covered by a given lens.
Other manufacturers, such as Panavision and Vantage, o er proprietary lens mounts for the ALEXA LF and ALEXA Mini LF cameras, to support their own lens ranges. Cinematographers therefore have an almost unlimited lens choice when shooting with ARRI large-format cameras.
Fast and effcient workfows
Following the 16-bit internal image processing, internal recording with both cameras is possible in uncompressed and unencrypted ARRIRAW or fast and e cient Apple ProRes. Existing ARRI Look Files (ALF-2) can be used, and the entire range of ARRI work ow software tools supports ALEXA large-format images. Lens metadata can be recorded from LDS-1, LDS-2 or /i capable lenses.
ALEXA Mini LF is the rst camera to feature the new Compact Drive recording media from Codex, an ARRI technology partner. Small and lightweight, but solidly built, the 1 TB drive o ers a reliable, cost-e ective recording solution. With it comes a USB-C Compact Drive Reader and a Compact Drive Adapter that can be used in any dock that accepts SXR Capture Drives, greatly increasing download speeds. The Compact Drive Reader can be used without any extra software or licenses on Mac or Windows computers.
40% savings of time and budget with High Density Encoding
Codex High Density Encoding (HDE) uses sophisticated, loss-less encoding to reduce ARRIRAW le sizes by around 40% during downloading or later in the work ow. This lowers storage costs, shortens transfer times, and speeds up work ows, which translates to a direct 40% saving in time and money. HDE is free-of-charge for use with Codex Capture and Compact Drives, openly shared, and fast: ARRIRAW Open Gate 4.5K can be encoded comfortably at 24 fps on a modern MacBook Pro.