How Does the Sigma fp Stack Up to Other Major Mirrorless Full-Frame Cameras?

We took a look at a few of the other best mirrorless cameras on the market. Here are the cold-hard tech specs.

Credit: Canon

Canon EOS R 

• Approximate Retail Price: $1,999
• Sensor: Full-frame CMOS 
• Pixels: Effective 30.3 MP
• Lens Mount: RF
• Video: Recording Mode: MP4/H.264 UHD 4K (3840 x 2160) at 23.976p/24p/25p/29.97p, Full HD (1920 x 1080) at 23.976p/24p/25p/29.97p/50/59.94p, HD (1280 x 720) at 25p/29.97p/50p/59.94p/100p/120p
• Dynamic Range: 12 stops, native ISO 100 - 40000
• Battery: LP-E6N lithium ion battery. 430 shots per charge.
• Output: HDMI, 4K 10-bit 4:2:2
• Viewfinder: 3.69m-dot OLED electronic viewfinder
• Rear Touchscreen: 3.15'' LCD touchscreen, swivel design
• Audio: Built-in stereo microphone, 3.5mm microphone input
• Ports: 3.5mm Microphone, HDMI C (Mini), USB Type-C
• Wifi/Bluetooth: Yes
• Memory: One SD memory card slot
• Dimensions: 5.3 x 3.9 x 3.3'' 
• Weight: 1.45 lb 

Credit: Sony

Sony Alpha a7 III 

• Approximate Retail Price: $1,998
• Sensor: Full-frame CMOS
• Pixels: Effective 24.2 MP
• Lens Mount: Sony E 
• Video:  Recording Mode: XAVC S/H.264,  UHD 4K (3840 x 2160) at 23.976p/25p/29.97p [60 to 100 Mb/s], Full HD (1920 x 1080) at 100p/120p [60 to 100 Mb/s], Full HD (1920 x 1080) at 23.976p/25p/29.97p/50p/59.94p [50 Mb/s], Full HD (1920 x 1080) at 50p/59.94p [25 Mb/s], Full HD (1920 x 1080) at 25p/29.97p [16 Mb/s], AVCHD/H.264 Full HD (1920 x 1080) at 50i/59.94i [24 Mb/s] Full HD (1920 x 1080) at 50i/59.94i [17 Mb/s]
• Dynamic Range: 14 stops, native ISO 100 to 51200
• Battery: NP-FZ100 battery. 710 shots per charge.
• Output: HDMI, 4K 8-bit 4:2:2
• Viewfinder: 2.359m-dot electronic viewfinder
• Rear Touchscreen: 3'' LCD touchscreen, tilting design
• Audio: Built-in stereo microphone, 3.5mm microphone input
• Ports: 3.5mm Headphone, 3.5mm Microphone, HDMI D (Micro), USB 2.0 Micro-B, USB 3.0, USB Type-C
• Wifi/Bluetooth: Yes
• Memory: Dual SD memory card slots
• Dimensions: 5 x 3.8 x 2.9"
• Weight: 1.43 lb 

Credit: Nikon

Nikon Z6

• Approximate Retail Price: $1,796
• Sensor: Full-frame CMOS
• Pixels: Effective 24.5 MP
• Lens Mount: Nikon Z
• Video:  Recording Mode:  MOV/MP4/H.264, UHD 4K (3840 x 2160) at 23.976p/25p/29.97p, Full HD (1920 x 1080) at 23.976p/25p/29.97p/50p/59.94p/100p/120p
• Dynamic Range: native ISO 100 to 51200
• Battery: EN-EL15b rechargeable lithium-ion battery. 310 shots per charge.
• Output: HDMI, 4K 10-bit
• Viewfinder: 3.69m-dot electronic viewfinder
• Rear Touchscreen: 3.2'' LCD touchscreen, tilting design
• Audio: Built-in stereo microphone, 3.5mm microphone input
• Ports: 3.5mm Headphone, 3.5mm Microphone, HDMI C (Mini), Nikon DC2, USB Type-C
• Wifi/Bluetooth: Yes
• Memory: Single XQD memory card slot
• Dimensions: 5.3 x 4 x 2.7''
• Weight: 1.29 lb

Credit: Panasonic

Panasonic Lumix DC-S1

• Approximate Retail Price: $2,497
• Sensor: Full-frame MOS
• Pixels: Effective 24.2 MP
• Lens Mount: Leica L
• Video:  Recording Mode: 4:2:2 10-Bit UHD 4K (3840 x 2160) at 23.976p/29.97p, MP4/H.264, UHD 4K (3840 x 2160) at 59.94p [150 Mb/s], UHD 4K (3840 x 2160) at 23.976p/29.97p [100 Mb/s], Full HD (1920 x 1080) at 59.94p [28 Mb/s], Full HD (1920 x 1080) at 29.97p [20 Mb/s], MP4/H.265, UHD 4K (3840 x 2160) at 23.976p/29.97p [72 Mb/s], AVCHD Full HD (1920 x 1080) at 59.94p [28 Mb/s] Full HD (1920 x 1080) at 29.97p [24 Mb/s]  Full HD (1920 x 1080) at 59.94i [17 Mb/s] Full HD (1920 x 1080) at 59.94i [24 Mb/s]
• Dynamic Range: ISO 100 to 51,200
• Battery: DMW-BLJ31 rechargeable lithium-ion battery. 380-400 shots per charge.
• Output: UHD 4K 10-bit. HDMI.
• Viewfinder: 5.76m dot Electronic
• Rear Touchscreen: 3.2'' LCD touchscreen, tilting design.
• Audio: Built-in stereo microphone, 3.5mm microphone input
• Ports: 3.5mm Headphone, 3.5mm Microphone, 2.5mm Sub-Mini, HDMI A, USB 3.0, USB Type-C, X-Sync Socket
• Wifi/Bluetooth: Yes
• Memory: 1 x SSD/SDHC/SDXC, 1 x XQD
• Dimensions: 7 x 3.8 x 3.4''
• Weight: 2.25 lb

Credit: Black Magic Pocket Cinema 4K

Black Magic Pocket Cinema Camera 4K

• Approximate Retail Price: $1,295
• Sensor: 4/3'' 18.96 x 10 mm CMOS
• Lens Mount: Micro Four Thirds
• Video:  
• Recording Mode: Raw: 4096 x 2160 at 23.98/24/25/29.97/30/50/59.94/60 fps (21 to 203 MB/s), ProRes 422HQ: 4096 x 2160 at 23.98/24/25/29.97/30/50/59.94/60 fps (117.88 MB/s) 3840 x 2160 at 23.98/24/25/29.97/30/50/59.94/60 fps (110 Mb/s) 1920 x 1080p at 23.98/24/25/29.97/30/50/59.94/60/120 fps (27.5 MB/s), ProRes 422: 4096 x 2160 at 23.98/24/25/29.97/30/50/59.94/60 fps (78.63 MB/s) 3840 x 2160 at 23.98/24/25/29.97/30/50/59.94/60 fps (73.6 MB/s) 1920 x 1080p at 23.98/24/25/29.97/30/50/59.94/60/120 fps (18.4 MB/s), ProRes 422LT: 4096 x 2160p at 23.98/24/25/29.97/30/50/59.94/60 fps (54.63 MB/s) 3840 x 2160 at 23.98/24/25/29.97/30/50/59.94/60 fps (51 MB/s) 1920 x 1080p at 23.98/24/25/29.97/30/50/59.94/60/120 fps (12.75 MB/s), ProRes 422 Proxy: 4096 x 2160 at 23.98/24/25/29.97/30/50/59.94/60 fps (24.25 MB/s) 3840 x 2160 at 23.98/24/25/29.97/30/50/59.94/60 fps (22.4 MB/s) 1920 x 1080p at 23.98/24/25/29.97/30/50/59.94/60/120 fps (5.6 MB/s)
• Dynamic Range: 13 stops, ISO 100 to 25,600 (expanded)
• Battery: Canon LP-E6 battery. Approximately 60 minutes (recording at 24 fps without any external USB-C device connected).
• Output: USB 4K 12-bit. HDMI. 
• Viewfinder: N/A
• Rear Touchscreen: 5'' LCD touchscreen
• Audio: Built-in stereo microphone, 3.5mm microphone input
• Ports: HDMI, 1 x Mini XLR Mic/Line Level (+48 V Phantom Power) Input, 1 x 1/8" / 3.5 mm Stereo Mic/Line Level Input, 1 x 1/8" / 3.5 mm Stereo Headphone Output, 1 x USB Type-C Video Output, 1 x 3.5 mm Timecode Input (Shared with 3.5 mm Mic/Line input)
• Wifi/Bluetooth: Bluetooth control 
• Memory: 1 x CFast 2.0 Card Slot, 1 x SDXC UHS-II Card Slot
• Dimensions: 7 x 3.8 x 3.4''
• Weight: 1.5 lb

Credit: Fujifilm

Fujifilm X-T3

• Approximate Retail Price: $1,499
• Sensor: 23.5 x 15.6 mm CMOS
• Pixels: 26.1 MP
• Lens Mount: Fujifilm X
• Video:  Recording Mode:  H.265 4:2:0 10-Bit, DCI 4K (4096 x 2160) at 23.976p/24p/25p/29.97p [100 to 400 Mb/s], DCI 4K (4096 x 2160) at 50p/59.94p [100 to 200 Mb/s], UHD 4K (3840 x 2160) at 23.976p/24p/25p/29.97p [100 to 400 Mb/s], UHD 4K (3840 x 2160) at 50p/59.94p [100 to 200 Mb/s], DCI 2K (2048 x 1080) at 23.976p/24p/25p/29.97p/50p/59.94p [50 to 200 Mb/s], Full HD (1920 x 1080) at 23.976p/24p/25p/29.97p/50p/59.94p [50 to 200 Mb/s], H.264/MPEG-4 4:2:0 8-Bit, DCI 4K (4096 x 2160) at 23.976p/24p/25p/29.97p [100 to 400 Mb/s], DCI 4K (4096 x 2160) at 50p/59.94p [100 to 200 Mb/s], UHD 4K (3840 x 2160) at 23.976p/24p/25p/29.97p [100 to 400 Mb/s], UHD 4K (3840 x 2160) at 50p/59.94p [100 to 200 Mb/s], DCI 2K (2048 x 1080) at 23.976p/24p/25p/29.97p/50p/59.94p [50 to 200 Mb/s], Full HD (1920 x 1080) at 23.976p/24p/25p/29.97p/50p/59.94p [50 to 200 Mb/s]
• Dynamic Range: ISO 100 to 12,800
• Battery: Canon LP-E6 battery. Approximately 60 minutes 
• (recording at 24 fps without any external USB-C device connected).
• Output: 4:2:2. 10-Bit. 
• Viewfinder: 3.69m dot electronic
• Rear Touchscreen: 3'' LCD touchscreen, tilting design.
• Audio: Built-in stereo microphone, 3.5mm microphone input
• Ports: 3.5mm Headphone, 3.5mm Microphone, 2.5mm Sub-Mini, HDMI D (Micro), USB 3.0, USB Type-C, X-Sync Socket
• Wifi/Bluetooth: Wifi only
• Memory: Dual SDS/SDHC/SDXC card slots.
• Dimensions: 5.2 x 3.7 x 2.3'' 
• Weight: 1.19 lb

Credit: Sigma

Sigma fp

• Approximate Retail Price: Unannounced 
• Sensor: Full-frame (35.9mm x 23.10mm) Bayer CMOS
• Pixels: Effective 25.3 MP
• Lens Mount: L-Mount
• Video:  Recording Mode:  3,840 x 2,160 (UHD 4K): 23.98p, 25p,29.97p, FHD (1,920x1,080): 23.98p, 25p, 29.97p, 59.94p, 100p, 119.88p
• Dynamic Range: ISO 100 to 
• Battery: PowerLi-ion Battery BP-51
• Output: CinemaDNG（8bit / 10bit/ 12bit） / MOV：H.264 (ALL-I/ GOP)
• Viewfinder: 3.69m dot electronic
• Rear Touchscreen: 3'' LCD touchscreen, tilting design.
• Audio: Built-in stereo microphone, 3.5mm microphone input
• Ports: HDMI D (Micro), USB Type-C
• Wifi/Bluetooth: N/A
• Memory: Single SDXC card slot.
• Dimensions: 4.43 x 2.75 x 1.78"
• Weight: .93 lb 

When it comes down to it, we still have many unanswered questions about the Sigma fp. Namely, how much it will cost. 

Whether you're a professional or an amateur, choosing a camera is a personal decision. With so many mirrorless cameras available, your personal preference comes more into play than ever. Workflow, lens choice and availability, handling, and even button placement become important factors when making a choice between such a wealth of options.

Which camera fits your workflow best? What's your biggest decision-making factor? Is it even worth considering 3/4'' sensors with so many full-frame options on the market?

Let us know what you think in the comments.