Camera
Sigma BF, a mirrorless camera unlike anything you've seen

Rendering: Sigma |
Sigma has revealed the BF, a radically minimalist 24MP full-frame L-mount mirrorless camera.
It’s a compact mirrorless body with a single rear-plate dial and three buttons that haptic feedback when pressed. Sigma says the interface has been designed to be simple and intuitive. Other than these three rear buttons, the camera has shutter and power buttons.
It offers phase-detection autofocus, which is combined with a subject recognition system designed to detect humans, dogs and cats: a first for Sigma.
The BF has 230GB of internal memory instead of any removable media cards and uses the USB slot to transfer data off the camera. Sigma says this is sufficient for 14,000 JPEGs, 4300 uncompressed DNG Raws or 2.5 hours of video shot in its highest quality settings.
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Rendering: Sigma |
The body is milled from a single block of aluminum, which Sigma says is a first (though this may include caveats in the smallprint as both Leica and Hasselblad have made similar claims in the past). It weighs just 388g (13.7oz) without battery.
However, the camera has no mechanical shutter, which means it risks exhibiting rolling shutter when used to shoot fast-moving subjects. There’s also no stabilization.
The BF is a small rectangular body with a texture cut into the front surface to provide grip. A small settings display to the right of the fixed live view display displays either the ISO, shutter speed or aperture value, so that the main composition panel doesn’t have to have camera settings intruding on the view.
In addition to stills, the BF can capture 6K video at up to 30p, or 4K footage derviced from 6K capture. This can be in H.264 or H.265 and has the option to use Leica’s L-Log response curve for preserving flexibility for making tone and color adjustments in post.
There are no ports on the camera, other than a single, exposed USB-C socket on the side of the body. On the base there’s just a tripod socket and a catch to release the battery.
The Sigma BF will be available in a choice of black or silver, with both versions retailing for around $2000. Silver versions of Sigma’s i-series primes will be available in L-mount, to match the camera.
Announcing the “Radically Simple” Sigma BF camera
Ronkonkoma, New York – SIGMA Corporation of America, the US subsidiary of SIGMA Corporation (CEO: Kazuto Yamaki. Headquarters: Asao-ku, Kawasaki-shi, Kanagawa, Japan) is pleased to announce the Sigma BF, a 24-megapixel full-frame L-Mount camera. The Sigma BF presents an uncompromising new vision for the digital camera. Stripped to the essence but packed with power, innovative yet rooted in the origins of photography, it is designed to accompany you throughout your day and to capture the spontaneous beauty of everyday life. The BF balances performance with simplicity and returns the focus to what matters most: your photographs. The Sigma BF will retail for $1,999 and be available in April 2025.
A radically simple camera that evokes the essence of photography
A full-frame mirrorless camera offering an unprecedented intuitive shooting experience
Staying close to the photographer, the Sigma BF captures the beauty that lies hidden in everyday life, and becomes the catalyst to be aware of that beauty.
The BF focuses on the joy of photography that only a camera as a tool can provide. By simplifying and stripping away all excess elements, this full-frame mirrorless camera redefines the process of taking a photograph as a natural act.
The unique user interface, which provides a new sense of connection between the photographer and the camera in a true seamless unibody, is more intuitive than ever with its pressure-sensitive haptic buttons and dial. The high-definition expression of the approximately 24-megapixel full-frame sensor and the reliable dual autofocus system bring your vision to life.
Key features
Simple, clear, and completely new user interface
The user interface has a completely new information structure compared to conventional digital cameras, with the main shooting-related settings stored on the live view screen, secondary settings in the optional menu, and management functions and detailed settings in the system menu. Users can easily operate the shutter speed, aperture, ISO sensitivity, EV compensation and color mode, along with other important shooting-related elements at the touch of a finger. Combined with the auto setting, the functions of the general shooting mode dial are also covered.
Clear live view and status monitor
The default live view screen displays only the minimum necessary information and can be changed to display no information at all. Since the currently active setting is displayed on the status monitor, the users can concentrate solely on composition and the subject on the live view screen.
Minimal controls and haptics
All controls are integrated into just three buttons, one dial, the shutter release, and the power button. The BF is the first mirrorless camera* to incorporate haptics into its Dial, Center button, Option button, and Playback button, resulting in minimal physical wear. The buttons are always accurate and comfortable to press. * As of February 2025, by Sigma.
Unibody structure
The BF is the first camera in history* to feature a true unibody, which boasts unprecedented rigidity. Each camera is carved from a single, solid block of aluminum over the course of seven hours. The reliable, comfortable weight of its seamless all-metal body harmonizes perfectly with any attached lens.
* As of February 2025, by Sigma.
Internal storage
The BF features 230 GB of internal memory, capable of storing more than 14,000 JPEG files, 4,300 uncompressed RAW images or 2.5 hours of video at the highest-quality setting, with the USB-C port offering fast charging and data-transfer speeds.
Various color modes
Thirteen different color modes are available to open up new avenues of creativity. The modes range from unique options like Teal and Orange, Powder Blue, and Warm Gold to creative yet versatile options such as Rich, and Calm.
Evolved autofocus
A hybrid autofocus system combining image phase detection and contrast detection utilizes state-of-the-art algorithms to capture subjects accurately and reliably. In addition to people, dogs and cats can be detected in the subject detection mode.
Video shooting (6K, L-Log)
The BF supports high-resolution 6K and L-Log recording, enabling video production that takes advantage of the wide dynamic range of a full-frame sensor.
Equipped with L-Mount
The L-Mount lens mount allows the camera to be used with a wide variety of interchangeable lenses for mirrorless cameras from Sigma as well as other L-Mount Alliance partners.
Sigma BF specifications
Price | |
---|---|
MSRP | $2000 |
Body type | |
Body type | Rangefinder-style mirrorless |
Body material | Aluminum |
Sensor | |
Effective pixels | 25 megapixels |
Sensor photo detectors | 25 megapixels |
Sensor size | Full frame (36 x 24 mm) |
Image | |
Uncompressed format | RAW |
Screen / viewfinder | |
Articulated LCD | Fixed |
Screen size | 3.2″ |
Screen dots | 2,100,000 |
Touch screen | Yes |
Live view | Yes |
Viewfinder type | None |
Storage | |
Storage types | Internal only |
Storage included | 230GB |
Connectivity | |
USB | USB 3.2 Gen 2 (10 GBit/sec) |
USB charging | Yes |
Microphone port | No |
Headphone port | No |
Physical | |
Dimensions | 130 x 73 x 37 mm (5.12 x 2.87 x 1.46″) |
Camera
March Editors' photo challenge announced: Water

While visiting Dry Tortugas National Park, located 109km west of Key West, Florida, I looked down from the top of Fort Jefferson and saw this group of snorkelers just off Garden Key. Moments after this photo was taken, one of the snorkelers had the bad luck of being stung by a Portuguese man o’ war.
Photo: Dale Baskin |
The theme for our March Editors’ challenge is ‘Water’.
Show us the essence of water in its many forms, from the roaring power of the ocean to a gentle rain, reflections on a lake, smooth waterfalls, frozen ice, or even fine art. The possibilities are endless, so let your creativity flow and show us your best photos that revolve around water. Our favorites will be featured on the DPReview homepage later this month.
This challenge is open to photos taken at any time.
Photos can be submitted between Sunday, March 16, and Saturday, March 22 (GMT).
Important: Images MUST include a title and a caption of at least 25 words to be eligible. Viewers want to know the story behind your photo. We will consider both photos and captions when selecting our winners, so make sure to tell us that story!
Visit the challenge page to read the full rules and to submit your photos for consideration as soon as the challenge opens.
Visit the challenge page to see all the rules
Camera
Accessory Roundup: lights, iPads, bags and more

Images: Vanguard, Apple, Elinchrom |
CP+ may have ended last week, but that apparently hasn’t stopped the flood of accessory news. Today, we’ll look at a few lights, bags, computers and more, but first, let’s see what’s on sale.
Second-gen Goodness
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Photo: Richard Butler |
Canon’s Stacked sensor flagship, the EOS R5 II, is currently on sale for $300 off MSRP. We reviewed it late last year, and came away very impressed – it’s a camera that excels at nearly everything.
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Photo: Richard Butler |
Panasonic’s S5II isn’t quite as performant, but it’s still quite a good camera. It’s also substantially cheaper than the EOS R5 II, especially given the current sale that gets you $500 off.
Let there be lights
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Image: Godox |
Godox’s latest light for videographers and photographers is the Litemons C30. It’s a tiny LED panel weighing 248g that packs an internal battery capable of putting out 30W of light for up to 45 minutes. A USB-C port lets you recharge the battery or run the light for an extended period of time.
There are two versions of the light – a bicolor model, which costs $59, and an RGB model that will run you $89.
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Image: Elinchrom |
If you need something a little more powerful, there’s the recently released Elinchrom LED 100 C, a continuous RGB light with an integrated 72Wh battery that provides up to 40 minutes of power in the field. It comes with a diffusion dome and an adapter for Profoto light modifiers and can be charged via USB-C.
On the level
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Image: Vanguard |
Ball-head tripods are great if you want to easily level your tripod without messing around with leg length, but what if you already have a tripod that you like? Vanguard’s LVL accessory might be for you. It’s designed to sit between your sticks and your tripod’s head, adding a bit of height and letting you level your tripod head in a matter of seconds.
Vanguard makes several sizes, so it should be compatible with a wide range of tripods. The smallest, the LVL 42, has a 42mm base and can support up to 20kg (44lb), while the LVL 75 can support up to 40kg (88lb) – just make sure the rest of your tripod can handle that much weight too.
In the bag
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Image: Wandrd |
If you want to carry around some camera gear without using a massive backpack, Wandrd’s Stratus Photo 18L may be the bag for you. It’s relatively small and has built-in organization for your camera gear, as well as access hatches on both the right and left-hand side. It’s made of weather-resistant materials and has load-adjustment straps and a chest strap, which should let you carry it comfortably even if you’ve got it filled with gear.
New affordable iPads
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Image: Apple |
People don’t always think of the iPad as a photographic tool, but nowadays Apple’s tablets have a lot of processing power and can run many of the apps photographers use on their desktops. The company’s entry-level models – the iPad Air and the plainly-named iPad – have just gotten updates that make them better than ever. The Air gets the laptop-class M3 chip, as well as a new, optional keyboard with a bigger trackpad, function row and aluminum design. The M3 iPad Air starts at $599, and the new keyboard costs $269.
The cheaper iPad, meanwhile, gets the A16 chip from the iPhone 14 and 14 Pro. While it’s not as powerful as the M-class chips and doesn’t support Apple’s suite of AI features, it should still be plenty for light photo editing and organization. Its base storage has also been doubled from 64GB to 128GB. It starts at $349, which is what its predecessor sold for ever since Apple cut the price by $100 in 2024.
That wasn’t all Apple announced this week, though…
Get caught up
Some accessory news is so big that it gets its own article during the week, but we’d feel remiss not also mentioning those products here.
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Image: Apple |
As an example, Apple’s new computers. The company announced updates to its entry-level MacBook Air and top-of-the-line Mac Studio this week, adding its latest processors. The MacBook Air has enough processing power to handle the typical Photoshop and Lightroom tasks that most photographers need, all while being hyper-portable, while the Mac Studio can handle the highest-end photo and video editing tasks.
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Image: Peak Design |
Also announced this week: Peak Design’s Roller Pro, the company’s first piece of roller luggage. It’s a bit of a hybrid between a hardshell case and a softshell one, with plenty of padding and a front sleeve that can hold a laptop and other everyday carry items. You can read our full coverage of it here.
It’s currently being sold via Kickstarter for a discount over its $599 MSRP, but the usual disclaimer applies: Remember to do your research with any crowdfunding project. DPReview does its best to share only the projects that look legitimate and come from reliable creators, but as with any crowdfunded campaign, there’s always the risk of the product or service never coming to fruition.
Camera
Sony's content authenticity system isn't just for pro cameras anymore

Photo: Richard Butler |
Sony has released a firmware update that brings its Content Authenticity Solution to the a7 IV. The company announced a similar update for the a1 II, a1 and a9 III in January. However, this is the first time the tool to authenticate images will be available on something other than high-end, professional-grade cameras.
Software Ver. 5.00 for the Sony a7 IV adds support for the “Write Digital Signature” function for still images. This function allows photographers to add an electronic signature to their images to prove that they were taken with that camera. Authenticity tools such as this are becoming increasingly important with the growing prevalence of generative AI-created imagery and, as a result, the spread of fake images.
Of course, as with the update for the three pro-grade cameras in January, there are some caveats involved. The Digital Signature function requires a paid license and is only available for certain media outlets, not the general public. Unfortunately, Sony still hasn’t provided any additional information on if or when it will be available for general consumers. On the firmware update page, Sony simply says that the “timing for the provision of paid licenses to customers other than certain media outlets is yet to be determined.”
Even though the current usability is limited, Sony rolling this out to consumer models is a step in the right direction. The Content Authenticity information page also says that “more camera models will be supported in due course,” so it sounds like we should see additional cameras with the tool at some point. If Sony makes the feature more widely available beyond media outlets, the Digital Signature feature will already be on cameras and ready for use.
If you want to be prepared, or happen to work for one of the select media outlets, the Sony a7 IV firmware update Ver. 5.00 is now available for download.
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