ALEXA Mini LF

The ARRI ALEXA Mini LF is a powerhouse of a camera, designed to bring the immersive, large-format aesthetic of the ALEXA LF into a compact, lightweight form factor. It is built for cinematographers who need the uncompromising image quality of ARRI’s large-format sensor—which is slightly larger than full frame—without the bulk of a traditional cinema camera. It competes directly with high-end cinema cameras by offering a native 4.5K resolution, true 800 ASA sensitivity, and the ability to record uncompressed ARRIRAW or efficient Apple ProRes, making it a versatile tool for everything from high-end feature films to specialized, mobile productions.

What truly sets the Mini LF apart is its integration into a complete large-format system. It features the LPL lens mount, which is optimized for large sensors, allowing for smaller, lighter lenses with fast T-stops and beautiful bokeh. Despite its modern design, it maintains excellent compatibility with existing PL-mount lenses via a tool-less adapter, and it shares the robust, proven design language of the original ALEXA Mini, meaning many existing accessories work right out of the box. The inclusion of the MVF-2 viewfinder, with its high-contrast OLED display and flip-out monitor, provides a seamless interface for both live view and menu navigation.

This camera is an ideal choice for cinematographers working on productions that demand the highest image quality, HDR, and WCG workflows, but require the flexibility to move quickly. Whether you are shooting on a drone, a stabilizer, or in a tight space, the Mini LF provides the perfect canvas for modern, subtle lighting techniques, all while maintaining the reliability and workflow efficiency that ARRI is known for.

Narrative Filmmaking

Use the LF Open Gate 4.5K resolution to maximize the sensor area and capture the highest quality image for post-production. Record in ARRIRAW for maximum flexibility in color grading. Set the project rate to 23.976p or 24p to match standard cinema frame rates.

Documentary / Run-and-Gun

Record in Apple ProRes 422 HQ or 4444 to balance image quality with manageable file sizes. Use the LF 16:9 UHD resolution for standard delivery. Enable the built-in FSND filters to quickly adjust to changing lighting conditions without swapping external filters.

Interview & Talking Head

Set the camera to 24p or 25p depending on your region. Use a Log C look for the recording to preserve dynamic range, and apply a standard Rec 709 look to the monitor output for a natural preview. Ensure audio is set to 'Auto' or 'Manual' with a limiter to prevent clipping.

Slow Motion

Use the LF 16:9 2K or UHD resolution to achieve higher frame rates up to 90 fps. Note that the maximum frame rate is dependent on the recording resolution and codec; always check the 'Maximum FPS Info' screen in the menu before shooting.

Media Not Recognized

What's happening: The camera does not recognize the inserted Codex Compact Drive. Why: The drive may not be properly formatted or the media door may not be fully closed. Fix: Ensure the drive is fully inserted and the media door is locked. If the issue persists, use the 'Erase Media' function in the 'Media' menu to format the drive in-camera. Prevention: Always handle media with care and ensure the contacts are clean and free of debris.

Image Flickering

What's happening: The image shows flickering or bands of different brightness. Why: Interference from light sources like LEDs or discharge tubes, or a mismatch between shutter angle and light frequency. Fix: Adjust the shutter angle in the 'SHUTTER' menu until the flicker is minimized. For filming monitors, use the 'Shutter Angle' setting and fine-tune the value. Prevention: Test your lighting setup before recording and adjust the shutter angle accordingly.

Overheating

What's happening: The camera fan speed increases significantly or the camera shuts down. Why: High ambient temperatures or high data rates during extended operation. Fix: Ensure the fan openings are not obstructed. If in a hot environment, set the fan mode to 'Rec Low' in the 'System > Fan Mode' menu. Prevention: Avoid covering the camera's fan inlets/outlets and keep the camera out of direct sunlight in temperatures above 25°C.

Audio Clipping

What's happening: The audio signal is distorted or clipping. Why: The input signal level is too high for the current gain settings. Fix: Set the audio channel control to 'Manual (+L)' to engage the limiter, or use 'Auto' mode to let the camera manage the levels. Prevention: Monitor audio levels using the on-screen meters and adjust gain before recording starts.