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Sigma BF specifications and in-depth review

Sigma BF

Manufacturer: Sigma

The Sigma BF is a mirrorless camera offering a versatile set of features for both enthusiasts and professionals. With a 24.6 MP sensor and a 3.15″ touchscreen, it balances performance with ease of use. It is built as a system camera and supports manual focus and manual exposure adjustments for full control over your shots.

Technically, the Sigma BF features a Full frame sensor with a Leica L lens mount, allowing for precise image capture. It supports phase-detection autofocus for photos and videos, and has a maximum ISO sensitivity of 102400. The camera includes 230GB of internal storage and offers Wi-Fi and Bluetooth connectivity, providing seamless sharing and remote control capabilities.

Pros
  • The camera supports Wi-Fi and Bluetooth, enabling wireless sharing and remote control capabilities.
  • It features 230GB of internal storage, providing ample space for photos and videos without needing additional memory cards.
  • The 24.6 MP Full frame sensor and phase-detection autofocus deliver high-quality imaging and fast focusing.
  • It offers manual focus, manual exposure, and manual ISO controls, allowing photographers full creative control.
  • The camera has USB 3.2 for fast data transfer between the device and compatible external devices.
Cons
  • It does not support an external memory slot, limiting storage expansion options.
  • There is no microphone input or 3.5mm audio jack, limiting audio customization during video recording.
  • The camera lacks weather-sealing, which may reduce its durability in harsh environmental conditions.
  • It does not have a flip-out screen, which could limit flexibility for certain types of shooting, such as vlogging.
  • The camera's battery life (CIPA) is relatively limited at 260 shots, which may require frequent recharging for extended shoots.
Who is this for?

The Sigma BF is ideal for photographers and videographers who value manual control and high-quality imaging. With its 24.6 MP Full frame sensor and phase-detection autofocus, it delivers sharp and detailed photos and videos, making it perfect for enthusiasts or professionals who want to capture high-resolution images in various lighting conditions. The camera's manual focus, manual exposure, and manual ISO features provide advanced users with the flexibility to fine-tune every shot, while its Wi-Fi and Bluetooth connectivity enable seamless sharing and remote control, adding convenience for those who require fast and easy transfer of media.

Who is this NOT for?

The Sigma BF may not be ideal for users who need extensive video or audio options. Its lack of microphone input and 3.5mm audio jack limits its potential for professional video work that requires high-quality external sound. Additionally, the absence of weather-sealing makes it unsuitable for outdoor photographers who frequently shoot in harsh or wet conditions. Those who require long battery life may also find the 260-shot battery life limiting for extended shooting sessions without easy access to charging.

Design:

Type Mirrorless
is weather-sealed (splashproof) ✕
screen resolution 2100k dots
Has a flip-out screen ✕
viewfinder coverage 100%
screen size 3.15"
weight 446 g
has a touch screen ✓
Has a hot shoe ✕
volume 348.543104 cm³
is a system camera ✓
has a flash ✕
width 130.1 mm
height 72.8 mm
thickness 36.8 mm

The Sigma BF is a mirrorless system camera with a compact design, weighing just 446 g. It features a 3.15″ touchscreen with a screen resolution of 2100k dots, offering an intuitive interface. The camera does not include a flip-out screen or weather-sealing, and lacks a built-in flash and hot shoe. It has a 100% viewfinder coverage and offers manual control with a sleek and portable form factor, measuring 130.1 mm in width, 72.8 mm in height, and 36.8 mm in thickness.

Optics:

sensor size Full frame
lens mount Leica L
megapixels (main camera) 24.6 MP
maximum ISO 102400 ISO
has sensor shift stabilization ✕
has AF tracking ✓
Has phase-detection autofocus for photos ✓
has manual focus ✓
has touch autofocus ✓
has manual shutter speed ✓
has a BSI sensor ✓
has manual exposure ✓
has a two-stage shutter ✓
has a serial shot mode ✓
has a CMOS sensor ✓
has manual ISO ✓
has manual white balance ✓
exposure time 30 s
Maximum electronic shutter speed 3.90625E-5 s
has a stacked CMOS sensor ✕

The Sigma BF features a Full frame sensor with a Leica L lens mount, providing high-quality image capture. It boasts a 24.6 MP resolution and supports phase-detection autofocus for fast and accurate focusing. Additional capabilities include manual exposure, manual ISO, and manual white balance, allowing for precise control over your shots, while the back-illuminated sensor enhances low-light performance.

Videography:

video recording (main camera) 3000 x 30 fps
Has phase-detection autofocus for videos ✓
has continuous autofocus when recording movies ✓
has a microphone input ✕
has a socket for a 3.5 mm audio jack ✕
has a stereo microphone ✓
number of microphones 2

The Sigma BF offers video recording at a resolution of 3000 x 30 fps, providing smooth footage for your videography needs. It supports phase-detection autofocus and continuous autofocus during video recording, ensuring sharp and fluid focus transitions. However, it lacks a microphone input and a 3.5mm audio jack, but does include a stereo microphone with two microphones for improved audio capture.

Battery:

Battery life (CIPA) 260 shots
has a removable battery ✓
has a rechargeable battery ✓
has a battery level indicator ✓

The Sigma BF is equipped with a removable and rechargeable battery, offering a battery life (CIPA) of 260 shots. It also includes a battery level indicator, so you can easily monitor the remaining charge while shooting.

Features:

release date April 2025
supports Wi-Fi ✓
Has Bluetooth ✓
shoots raw ✓
supports a remote smartphone ✓
has an HDMI output ✕
has GPS ✕
has first-party support for live streaming ✕
has NFC ✕
has an external memory slot ✕
internal storage 230GB
Has USB Type-C ✓

The Sigma BF offers Wi-Fi and Bluetooth connectivity, allowing for easy wireless sharing and control. It also supports remote smartphone functionality, enabling control via a mobile device. Additionally, the camera has 230GB of internal storage and a USB Type-C port for fast data transfer. However, it does not support HDMI output, GPS, or NFC, and lacks an external memory slot for additional storage.

Miscellaneous:

USB version 3.2

The Sigma BF is equipped with USB 3.2, ensuring fast and efficient data transfer between the camera and compatible devices. This version of USB allows for quick file sharing and connectivity with external storage devices, providing a seamless workflow for photographers and videographers.

Final Verdict

The Sigma BF is a solid choice for photographers and videographers who prioritize manual control and high-quality imaging, thanks to its 24.6 MP Full frame sensor and phase-detection autofocus. Its Wi-Fi and Bluetooth connectivity enhance convenience, making it suitable for creative professionals seeking flexibility. While it excels in image quality and control, its limited battery life and lack of essential video inputs or weather-sealing may deter those needing extended video recording or outdoor durability. Overall, the Sigma BF is a versatile and capable tool for users focused on manual shooting and creative flexibility.