Sigma's full-frame mirrorless camera 'Sigma BF' is here, a unique camera packed with features such as '230GB of built-in storage' and 'vibration feedback buttons' in an ultra-simple body
Sigma announced the mirrorless camera ' Sigma BF ' on Monday, February 24, 2025. The Sigma BF is an L-mount camera equipped with a full-size sensor, and is packed with unusual features such as 230GB of built-in storage and pressure-sensitive haptic buttons (vibration feedback buttons).
BF | Cameras | Products | Sigma
Announcement of the full-frame mirrorless camera Sigma BF and release date | News | Sigma
https://www.sigma-global.com/jp/news/2025/02/24/010840/
Here's what the Sigma BF looks like with the lens attached. It features a seamless unibody that was carved out of an aluminum ingot over a period of seven hours.
It comes in two colors: black and silver. Below is the black version.
Silver. The only buttons on the front are for removing the lens.
This is what it looks like with the lens removed. The sensor uses a 35mm full-size back-illuminated CMOS sensor. The effective pixel count is approximately 24.6 million pixels. The lens mount is an L mount.
This is what it looks like with the cap attached.
The buttons are very simple. The pressure-sensitive haptic buttons prevent physical wear and ensure accurate and comfortable operation. The LCD monitor has 2.1 million dots and supports touch operation.
On the top surface there is only a microphone and a shutter button.
The left side is equipped with a USB Type-C port that supports USB 3.2. The Sigma BF does not have an SD card slot, and shooting data is stored in the 230GB built-in storage, and external storage can also be attached via the USB Type-C port. In addition, the USB Type-C port supports charging and video output.
There is a hole on the right side for passing a strap through.
The main specifications of the Sigma BF are as follows:
| Product Name | Sigma BF |
|---|---|
| Recording media | Built-in memory (approx. 230GB), USB storage |
| Lens mount | L-Mount |
| sensor | 35mm full-size back-illuminated CMOS sensor |
| Number of pixels | Effective pixel count: approx. 24.6 million pixels / total pixel count: approx. 25.3 million pixels |
| Still image file format | Lossless compression RAW (DNG) 14bit/JPEG (Exif3.0) RAW (DNG) + JPEG simultaneous recording possible |
| Image aspect ratio | [21:9], [16:9], [3:2], [A Size], [4:3], [6×7], [1:1] |
| Still image recording pixel count | 6016×4012 pixels |
| Video format | H.264, H.265, L-Log |
| Audio Format | Linear PCM (4ch 48 kHz/16-bit: maximum) |
| Video recording size/frame rate | 6K (6K: 6016×3384)/23.98, 25, 29.97fps UHD 4K/23.98, 25, 29.97fps FHD/23.98, 25, 29.97, 50, 59.94, 100, 119.88fps |
| Continuous Recording Time | 2 hours |
| AF method | Phase detection + contrast detection / Single AF, Continuous AF (with moving object prediction function), Manual focus |
| AF detection range | -5 to 18EV (F1.4: ISO100) 1-point, multi-point mode, subject detection mode (people + animals, people, animals) |
| Photometry | Evaluative metering, Spot metering |
| Photometric range | -7 to 20EV (50mm F1.4: ISO100) |
| ISO Sensitivity | Base Sensitivity [Still photography] ISO 320 [Video] MOV: ISO 320, Log shooting: ISO 1250 Possible setting range ISO100-102400/Extended sensitivity ISO 6, 12, 25, 50 |
| Image stabilization method | Electronic for video only (cannot be used when shooting in 6K) |
| Shutter Type | Electronic Shutter |
| Shutter speed | 1/25600 to 30 seconds, bulb (up to 5 minutes) |
| Continuous Shooting Speed | 3, 5, 8 frames per second |
| Rear monitor | TFT color LCD aspect ratio 3:2 3.15-inch, approx. 2.1 million dots capacitive touch panel |
| Built-in microphone/speaker | Stereo microphone/mono speaker |
| Interface | USB: USB Tye-C compliant with USB 10Gbps (USB 3.2) REMOTE: - Release External microphone/headphone output: Supported |
| Dust-proof and weather-resistant | Yes (Can be used in light rain, etc. Not waterproof) |
| power supply | Dedicated lithium-ion battery (Li-ion battery pack BP-81) |
| size | Width 130.1mm x Height 72.8 x Depth 36.8mm |
| weight | Approximately 446g with battery, approximately 388g without battery |
The Sigma BF will be released in April 2025. The price is open, and the price on the official online shop is 385,000 yen including tax.
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in Hardware, Posted by log1o_hf