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Archive 2025 · The New Sigma BF Camera

  
 
LBJ2
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p.1 #1 · The New Sigma BF Camera


The new Sigma BF camera. A minimalist 24-megapixel full-frame L-Mount camera with 230GB internal memory and weighs just 388g (13.7oz) without battery. Comes in silver or black.

https://www.sigma-global.com/en/cameras/bf/

https://2.img-dpreview.com/files/p/E~TS1180x0~articles/1398165547/02_PPH_1.jpeg
https://2.img-dpreview.com/files/p/E~TS1180x0~articles/1398165547/Sigma_BF_rear_view.jpeg
https://petapixel.com/assets/uploads/2025/02/05_PPhoto_BF-Basic_45mm_F28_black_Desktop.jpg



Edited on Feb 23, 2025 at 11:00 PM · View previous versions



Feb 23, 2025 at 10:54 PM
ISO1600
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p.1 #2 · The New Sigma BF Camera


i beat you by 2 minutes, but your thread has images so it's more visually appealing; i'll crosspost from mine-


Looks gorgeous and interesting.

https://www.sigma-global.com/en/cameras/bf/
https://www.dpreview.com/news/1398165547/sigma-bf-a-mirrorless-camera-unlike-anything-you-ve-seen

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 phaseAnnouncing 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.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.

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.



Feb 23, 2025 at 10:59 PM
weezintrumpete
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p.1 #3 · The New Sigma BF Camera


Wow, really intriguing! I’m interested to hear how the minimal user interface works out in practice.

You can always count on Sigma for trying some different things, and I really appreciate it.



Feb 23, 2025 at 11:06 PM
LBJ2
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p.1 #4 · The New Sigma BF Camera


ISO1600 wrote:
i beat you by 2 minutes, but your thread has images so it's more visually appealing; i'll crosspost from mine-


Apologies. I can no longer delete my thread, but perhaps we can ask Fred to combine these threads so we don't have two threads running? Happy to accommodate.



Feb 23, 2025 at 11:15 PM
RustyBug
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p.1 #5 · The New Sigma BF Camera


Should mate perfectly with my Siggy 500/5.6.

Hopefully that combo can fit in my pocket, now.


Actually, it sounds like the FF version of the Leica TL2 (also milled), with electronic shutter only ... a nice pocket rocket with M lenses, too.

If Siggy is making a FF version of the TL2, maybe it harkens to the FF version of the CL coming from Leica (i.e. EVF M) as the L-Mount Alliance splits the product line(s) offerings.



Feb 23, 2025 at 11:19 PM
Jman13
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p.1 #6 · The New Sigma BF Camera


This is one of those cameras that looks really cool, I bet feels amazing with regards to build quality, but when you actually take it out to use it, it becomes a camera that is beaten by so many others at a cheaper price. Like, it has most of the disadvantages of the fairly roundly panned LUMIX S9, but at least that had a grip and IBIS to make hand holding doable.

It is pretty, though, and the interface may have a lot of promise (though the learning curve would be steeper than most.



Feb 23, 2025 at 11:34 PM
ISO1600
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p.1 #7 · The New Sigma BF Camera


I think it'll be loved and hated, just like the FP. I will admit the FP handles better with an added grip, but adding a grip kinda ruins the aesthetic of the whole thing.
Specs seem like there's several big modernizations from the FP.
Anybody who buys this camera not knowing if the form factor and limitations will work for them.... Uhhh.... Good luck? Maybe wait until you can find a used one.
I wanted to try the FP for years, finally bought one for $800 only to find that in use, it kinda drove me nuts. But there's still so many things I love about the "tiny box with a big sensor" form factor.



Feb 24, 2025 at 12:39 AM
Longviewer
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p.1 #8 · The New Sigma BF Camera


Thought it was a joke, but that's on me!

I guess the battery is sealed in; wonder if wx seals are behind that dial? Battery life, sensor choice and more TBD.
## Edit: fStoppers says bsi sensor, does not say stacked. Not quite 25Mpx, an unusual number unless that's total pixels. YES to wx seals but :√( 260 shot battery life? ##

It's a bit cuter than my white K-01..



Feb 24, 2025 at 12:44 AM
Juha Kannisto
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p.1 #9 · The New Sigma BF Camera


I would be interested but I need an EVF and there isn't even an external option, and I'd use it mainly with adapted rangefinder lenses so it would need to work well with those. Original fp has noticeable color shading and strong vignetting with adapted WA rangefinder lenses but at least there was a user configurable lens shading compensation feature that could help. Not sure if this one has the same color shading + vignetting behavior. They might not have carried the compensation feature to the new BF since UI seems to be completely redesigned and simplified.

EDIT: It does have Lens Optics Compensation menu and in Sigma fp that menu contains the 10 slots for Color Shading compensation options that user can configure for adapted lenses (by taking reference shots), so hopefully they have retained the same capabilities in BF.

Edited on Feb 24, 2025 at 02:02 AM · View previous versions



Feb 24, 2025 at 01:20 AM
GlenPhotoNZ
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p.1 #10 · The New Sigma BF Camera




Longviewer wrote:
I guess the battery is sealed in;


Batteries are removable. Weight is given without batteries, and conclusively, batteries (and dual charger) are listed as a seperate SKU on Sigma's site



Feb 24, 2025 at 01:24 AM
raizans
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p.1 #11 · The New Sigma BF Camera


I’m not going to say the S-word, but that’s a great design!

I hope it’s compatible with the LVF-11 “chimney” finder.



Feb 24, 2025 at 01:30 AM
Juha Kannisto
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p.1 #12 · The New Sigma BF Camera




raizans wrote:
I’m not going to say the S-word, but that’s a great design!

I hope it’s compatible with the LVF-11 “chimney” finder.


It doesn't seem to be compatible with any existing Sigma viewfinders. None are mentioned in the accessories list and BF doesn't share the same kind of connector's that fp has for attaching various accessories.



Feb 24, 2025 at 01:34 AM
zhangyue
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p.1 #13 · The New Sigma BF Camera


Cool camera, great 2nd body for travel for L mount user. (remind me of RX1) Put a small m lens on it, it can be a pocket camera.


Feb 24, 2025 at 02:36 AM
johnvanr
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p.1 #14 · The New Sigma BF Camera


So, did people make fun of the Zeiss version of this only because of its price?


Feb 24, 2025 at 03:26 AM
joakim
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p.1 #15 · The New Sigma BF Camera


Sigma has many small lenses in L mount but for photography this camera would really benefit from a pancake lens. Small M lenses should work too as mentioned by others.


Feb 24, 2025 at 04:01 AM
mboy
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p.1 #16 · The New Sigma BF Camera


My hope they'll later provide an evf attachment like the lvf-11, since I'm encouraged by the fact it has USBC video out

I also hope rolling shutter and banding is not too bad

It's exciting development for sigma fans

Also the sensor plane marker (normally located about where the hotshoe would be) is to the side, which may hint at a future side attachment



Feb 24, 2025 at 04:30 AM
fotografur
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p.1 #17 · The New Sigma BF Camera


Cool looking. The Jony Ive camera🤣

Thinking the Sony A7cll would be a better fit for most but I wouldn't mind having one for my desk.



Feb 24, 2025 at 05:36 AM
bwcolor
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p.1 #18 · The New Sigma BF Camera


Great museum piece. You have to love Sigma. The lack of EVF probably won’t matter to the relatively better off consumer that grew up using smartphones. Resolution is less than modern cellphones, but then again, cellphones don’t have full frame sensors. Some form of image stabilization would be great, but in some ways it is a purist camera…except it won’t accept Tri-X.


Feb 24, 2025 at 08:28 AM
zeroAska
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p.1 #19 · The New Sigma BF Camera


This is beautiful. However, no wifi, no hotshoe, and most importantly, still no mechanical shutter.

Edited on Feb 24, 2025 at 02:44 PM · View previous versions



Feb 24, 2025 at 09:28 AM
Vern Dewit
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p.1 #20 · The New Sigma BF Camera


Beautiful little camera, intriguing for sure. I've had versions of the FP in my shopping cart many times over the years, but after owning one for a limited time it was too frustrating to use in real world scenarios (for me). Same with the TL1 and a TL2 that I've owned over the years. Unfortunately, "beautiful" doesn't equal "useful".

I suspect the BF will be very similar. Part of me really wants to slap a 17 and 95mm prime lens on this baby and take it for a hike, but then I realize that it doesn't even have two strap lugs, so even just carrying it around will be challenging. Now try taking a photo in bright day light with no EVF. Not to mention I already have an EVF-free camera in my pocket with a 13mm and 77mm lens available (iPhone)...

But it's still gorgeous and I still want one.



Feb 24, 2025 at 10:17 AM
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