Introduction
Sigma has entered 2025 with the Sigma BF, a compact mirrorless camera aimed at photographers and content creators seeking high-resolution performance in a portable form factor. With a focus on image quality, advanced autofocus, and versatile video features, the Sigma BF competes strongly with other mirrorless cameras in its category.
Design & Build
The Sigma BF features a compact, lightweight body with ergonomic grip design, ideal for long shooting sessions. It weighs approximately 480 grams, making it portable yet robust.
The camera’s body is weather-sealed, providing resistance against dust and light rain, while maintaining a sleek, modern aesthetic suitable for professional use.
Sensor & Image Quality
- Sensor: Full-frame CMOS, 42MP
- Image Processor: Sigma X-Processor BF
- ISO Range: 100–51200 (expandable)
The 42MP sensor delivers exceptional detail, wide dynamic range, and accurate colors. Low-light performance is strong, with minimal noise up to ISO 12800. JPEG and RAW processing are handled efficiently by the X-Processor BF.
Autofocus & Performance
The Sigma BF features hybrid phase-detect and contrast-detect autofocus, covering approximately 90% of the frame. Key features include:
- Eye & Face Detection for humans and animals
- Real-time Tracking for moving subjects
- Fast startup and minimal shutter lag
Burst shooting supports up to 12 fps, making it suitable for action photography.
Video Capabilities
- 4K UHD recording at 60 fps
- Full HD 1080p at 120 fps for slow-motion
- 10-bit 4:2:2 internal recording
- HDR and LOG support
The camera is versatile for both professional video creators and vloggers, with clean HDMI output and external mic input.
Display & Viewfinder
The Sigma BF has a 3.2-inch tilting LCD touchscreen with 1.62 million dots. The electronic viewfinder (EVF) offers 3.69 million dots with 120Hz refresh for smooth framing and tracking. Touch focus, swipe navigation, and intuitive menu operation enhance usability.
Connectivity & Extras
- Wi-Fi & Bluetooth for remote control and image transfer
- Dual SD card slots supporting UHS-II speeds
- USB-C port for data transfer and charging
- Weather sealing for outdoor shooting
These features make the Sigma BF ideal for photographers on the go.
Pros & Cons
Pros:
- High-resolution 42MP full-frame sensor
- Fast, accurate autofocus with real-time tracking
- 4K 60fps video with LOG and HDR support
- Compact and weather-sealed body
- Dual card slots and modern connectivity options
Cons:
- Limited native lens ecosystem compared to some rivals
- Battery life could be improved for long shooting sessions
- Slightly higher price for entry-level mirrorless users
Price & Availability
The Sigma BF is expected to launch at approximately $2,199 (body only), with availability in major markets throughout 2025. Prices may vary depending on bundles, lenses, and regional taxes.
Final Verdict
The Sigma BF is a versatile mirrorless camera delivering excellent image quality, advanced autofocus, and powerful video features in a compact design. It is perfect for photographers and videographers who need portability without compromising performance.
GizmoDaily Verdict: 8.8 / 10