Introducing the Sigma BF: A Game-Changing 6K Full-Frame Camera with L-Log & Unibody Structure

 The photography and videography world is buzzing with excitement as SIGMA unveils its latest innovation—the Sigma BF, a 24.6MP full-frame L-Mount camera. Priced at $1,999 USD and available from April 2025, this revolutionary camera offers a perfect balance of simplicity, performance, and cutting-edge features.



A Radically Simple, Unibody Camera Design

One of the standout features of the Sigma BF is its true unibody structure. Crafted from a single block of aluminum over seven hours, this mirrorless camera boasts unmatched durability and a sleek, minimalist design. With a weight of just 388g (13.7 oz), it’s incredibly portable, making it perfect for photographers and videographers on the go.

Powerful 24.6MP Full-Frame BSI CMOS Sensor

At its core, the Sigma BF houses a 35mm full-frame Back-illuminated CMOS sensor, delivering stunning image quality with a wide dynamic range. The native ISO 100-102400, expandable down to ISO 6, ensures exceptional low-light performance. Whether you're capturing stills or shooting high-resolution videos, the Sigma BF has you covered.

Unmatched Video Capabilities: 6K & L-Log Recording

Videographers will appreciate the Sigma BF’s ability to shoot 6K video at 29.97 fps. It also supports UHD 4K and Full HD (FHD) recordings at up to 119.88 fps, offering incredible flexibility for creative projects. With L-Log recording and support for H.264 and H.265 formats, this camera allows for professional-grade color grading and post-production.

  • 6K (6016 x 3384) / 23.98, 25, 29.97 fps

  • UHD 4K / 23.98, 25, 29.97 fps

  • Full HD / 23.98 to 119.88 fps

Note: Electronic Image Stabilization (EIS) is unavailable in 6K mode.

Evolved Hybrid Autofocus System

The Sigma BF features a hybrid phase and contrast detection autofocus system, ensuring fast and accurate focusing. Its advanced subject detection mode can recognize people, dogs, and cats, making it ideal for portrait and pet photography.

Intuitive Interface with Haptic-Responsive Controls

Simplifying the user experience, the Sigma BF comes with pressure-sensitive haptic buttons and a unique interface. Essential shooting settings like shutter speed, aperture, ISO, and color modes are easily accessible directly from the 3.15-inch 2.1M-dot rear viewscreen. The minimalist control setup includes just three buttons, one dial, the shutter release, and the power button.

Massive 230GB Internal Memory

Forget about SD cards—the Sigma BF offers 230GB of internal storage, capable of holding:

  • Over 14,000 JPEG images

  • Around 4,300 uncompressed RAW files

  • Approximately 2.5 hours of 6K video

A USB-C port allows for fast data transfers and quick charging, ensuring you're always ready to shoot.

Thirteen Stunning Color Modes

With 13 unique color modes, including popular options like Teal and Orange, Powder Blue, and Warm Gold, the Sigma BF provides plenty of creative freedom. Whether you're aiming for cinematic vibes or vibrant stills, these color modes help bring your vision to life.

L-Mount Compatibility

Thanks to its L-Mount lens system, the Sigma BF offers vast flexibility with lenses from SIGMA and other L-Mount Alliance partners. Whether you're shooting landscapes, portraits, or videos, you'll find the perfect lens to match your creative needs.

Key Specifications of the Sigma BF

  • Sensor: 35mm full-frame Back-illuminated CMOS

  • Resolution: 24.6MP effective pixels

  • ISO Range: 100-102400 (expandable down to ISO 6)

  • Video Formats: H.264, H.265, L-Log

  • Recording: 6K30, UHD4K30, FHD120

  • Autofocus: Hybrid Phase & Contrast Detection

  • Display: 3.15” 2.1M-dot touchscreen

  • Storage: 230GB internal memory

  • Weight: 388g (13.7 oz)

Final Thoughts

The Sigma BF is set to redefine what creators can expect from a mirrorless full-frame camera. With its 6K video recording, L-Log color profile, intuitive interface, and unibody construction, it’s a compelling choice for both photographers and filmmakers.

Stay tuned for its release in April 2025, and experience the future of digital imaging with the Sigma BF!

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