In depth comparison and review of Sigma fp and Sony Alpha7s III ILCE-7SM3. Compare design, sensors, proximity features, memory capacities and other important specifications and features to easily choose the right camera for you. Our goal is to help you uncover differences between the products and find the digital camera that will best fit your needs.
| DESIGN AND DIMENSIONS | Sigma fp | Sony Alpha7s III ILCE-7SM3 |
|---|
| Product Type | Digital camera - 4K - mirrorless system | Digital camera - 4K - mirrorless system |
|---|---|---|
| Lens Included | Body only | Body only |
| Height | 6.99 cm | 9.69 cm |
| Width | 11.26 cm | 12.89 cm |
| Depth | 4.53 cm | 8.08 cm |
| Weight | 370 g | 699 g |
| Weight Details | Camera body only: 370 g Camera with battery and memory card: 422 g |
Camera with battery and memory card: 699 g |
| Body Material | Aluminium | Magnesium alloy |
| Protection | Splashproof, dust-resistant | Dust-resistant, moisture-resistant |
| Digital Zoom | - | 4x |
| SENSOR | Sigma fp | Sony Alpha7s III ILCE-7SM3 |
|---|
| Sensor Resolution | 24.6 Megapixel | 12.1 Megapixel |
|---|---|---|
| Optical Sensor Type | BSI-CMOS | Exmor R CMOS |
| Total Pixels | 25,300,000 pixels | 12,900,000 pixels |
| Effective Sensor Resolution | 24,600,000 pixels | 12,100,000 pixels |
| Optical Sensor Size | Full Frame (35.9 x 23.1 mm) | Full Frame (35.6 x 23.8 mm) |
| Frame Rate (Max Resolution) | 30 fps | 120 fps |
| Sensor Dust Reduction | - | Yes |
| Sensor Features | - | Dust Reduction (image sensor vibration), Anti-Dust coating |
| Image Stabiliser | Electronic | Optical (5-axis Steady Shot) |
| Built-in Optical Image Stabiliser | - | Yes |
| Sensors | - | Digital level metre |
| PROCESSOR | Sigma fp | Sony Alpha7s III ILCE-7SM3 |
|---|
| Image Processor | - | BIONZ XR |
|---|
| LENS | Sigma fp | Sony Alpha7s III ILCE-7SM3 |
|---|
| Lens Mounting Type | L-Mount | Sony E-mount |
|---|
| FOCUSING | Sigma fp | Sony Alpha7s III ILCE-7SM3 |
|---|
| Auto Focus | TTL contrast detection | TTL contrast and phase detection |
|---|---|---|
| Auto Focus Points (Zones) Qty | 49 | 759 |
| Auto Focus Features | Focus Peaking function, Predictive Focus Control | Focus Peaking function, Predictive Focus Control |
| AE/AF Control | Face-priority AF, Subject-tracking AF, Eye detection AF, Predictive AI Servo AF | Flex Focus Point, Face-priority AF, Subject-tracking AF, Eye detection AF |
| Face Detection | Face-priority AF function | Face Recognition, face-priority AF function |
| VIEWFINDER | Sigma fp | Sony Alpha7s III ILCE-7SM3 |
|---|
| Viewfinder Type | - | Built-in - electronic |
|---|---|---|
| Viewfinder Colour Support | - | Colour |
| Viewfinder Diagonal Size | - | 0.64" |
| Viewfinder Resolution | - | 9,437,184 pixels |
| Optical Viewfinder Field Coverage | - | 100% |
| Optical Viewfinder Magnification | - | 0.9x |
| Optical Viewfinder Dioptric Correction Range | - | -4 to +3 |
| EXPOSURE & WHITE BALANCE | Sigma fp | Sony Alpha7s III ILCE-7SM3 |
|---|
| ISO (Max) | 102400 | 409600 |
|---|---|---|
| Native ISO | 100-25600 | - |
| Extended ISO (Max) | 102400 | 409600 |
| Extended ISO (Min) | 6 | 40 |
| Light Sensitivity | ISO 50, ISO 102400, ISO 51200, ISO 100-25600, ISO 6, ISO 12, ISO 25 | ISO 204800, ISO 409600, ISO 80-102400, ISO 40 |
| Exposure Metering | Evaluative, centre-weighted, spot | Multi-segment, centre-weighted, spot |
| Exposure Metering Zones | - | 1200 |
| Exposure Modes | Programme, manual, aperture-priority, shutter-priority | Bulb, automatic, manual, aperture-priority, shutter-priority |
| Bracketing Modes | - | Dynamic Range Bracketing |
| Special Effects | Cinema, Neutral, Vivid, monochrome, landscape, portrait, Sunset Red, Forest Green, FOV Classic Blue, FOV Classic Yellow, Standard, Teal & Orange | - |
| White Balance | Custom, automatic, presets | Custom, automatic, presets |
| White Balance Presets | Incandescent, fluorescent, Flash, daylight, shade, overcast | Incandescent, fluorescent, cloudy, Flash, daylight, shade, Underwater, 2500K - 9900K |
| Shutter Type | Electronic | Mechanical electronically-controlled |
| Max Shutter Speed | 1/8000 sec | 1/8000 sec |
| Min Shutter Speed | 30 sec | 30 sec |
| Exposure Compensation | ±5 EV range, in 1/3 EV steps | ±5 EV range, in 1/2 or 1/3 EV steps |
| Auto Exposure Bracketing | 3, 5 steps in 1/3 EV step | 3, 5 or 9 steps |
| X-sync Speed | - | 1/250sec |
| Exposure Range | EV -5-18 (ISO 100) | EV -3-20 (ISO 100) |
| DISPLAY | Sigma fp | Sony Alpha7s III ILCE-7SM3 |
|---|
| Type | 3.15" LCD display | 3" LCD display |
|---|---|---|
| Touch Screen | Yes | Yes |
| Display Format | 2,100,000 pixels | 1,440,000 pixels |
| Display Form Factor | Built-in | Folding |
| Display Features | - | Display brightness control |
| VIDEOGRAPHY / CAMCORDER | Sigma fp | Sony Alpha7s III ILCE-7SM3 |
|---|
| Digital Video Format | H.264, MOV, CinemaDNG | H.264, XAVC S, H.265, XAVC HS |
|---|---|---|
| Image Recording Format | JPEG, RAW, RAW + JPEG | JPEG, RAW, RAW + JPEG |
| Max Video Resolution | 3840 x 2160 | 3840 x 2160 |
| Audio Signal Format | Linear PCM | AAC |
| Microphone Operation Mode | Stereo | Stereo |
| MEMORY | Sigma fp | Sony Alpha7s III ILCE-7SM3 |
|---|
| Memory Card Slot | SD card | Dual SD card, dual CFexpress |
|---|---|---|
| Supported Memory Cards | SD Memory Card, SDXC Memory Card, SDHC Memory Card | SD Memory Card, SDXC Memory Card, SDHC Memory Card, SDHC UHS-I Memory Card, SDXC UHS-I Memory Card, SDHC UHS-II Memory Card, SDXC UHS-II Memory Card, CFexpress |
| Memory Card Included | No | No |
| Image Storage | RAW 6000 x 4000 RAW 3840 x 2560 - 1.5x crop RAW 3008 x 2000 RAW 1920 x 1080 - 1.5x crop |
JPEG 4240 x 2832 JPEG 2768 x 1848 JPEG 2128 x 1416 JPEG 1376 x 920 JPEG 3776 x 2832 JPEG 2464 x 1848 JPEG 1888 x 1416 JPEG 1232 x 920 JPEG 4240 x 2348 JPEG 2768 x 1550 JPEG 2128 x 1200 JPEG 1376 x 776 JPEG 2832 x 2832 JPEG 1840 x 1840 JPEG 1408 x 1408 JPEG 912 x 912 |
| Video Capture | 3840 x 2160 p - 29.97 fps 3840 x 2160 p - 25 fps 3840 x 2160 p - 23.98 fps 1920 x 1080 p - 119.88 fps 1920 x 1080 p - 100 fps 1920 x 1080 p - 59.94 fps 1920 x 1080 p - 50 fps 1920 x 1080 p - 29.97 fps 1920 x 1080 p - 25 fps 1920 x 1080 p - 23.98 fps |
XAVC HS - 3840 x 2160 p - 120 fps XAVC HS - 3840 x 2160 p - 60 fps XAVC HS - 3840 x 2160 p - 100 fps - 200Mbps XAVC HS - 3840 x 2160 p - 50 fps XAVC HS - 3840 x 2160 p - 24 fps XAVC S - 3840 x 2160 p - 120 fps XAVC S - 3840 x 2160 p - 60 fps XAVC S - 3840 x 2160 p - 30 fps XAVC S - 3840 x 2160 p - 24 fps XAVC S - 3840 x 2160 p - 100 fps XAVC S - 3840 x 2160 p - 50 fps XAVC S - 3840 x 2160 p - 25 fps XAVC S HD - 1920 x 1080 p - 120 fps XAVC S HD - 1920 x 1080 p - 60 fps XAVC S HD - 1920 x 1080 p - 30 fps XAVC S HD - 1920 x 1080 p - 24 fps XAVC S HD - 1920 x 1080 p - 100 fps XAVC S HD - 1920 x 1080 p - 50 fps XAVC S HD - 1920 x 1080 p - 25 fps |
| BATTERY AND CHARGING | Sigma fp | Sony Alpha7s III ILCE-7SM3 |
|---|
| Battery Type | Sigma BP-51 Lithium Ion | Sony NP-FZ100 Lithium Ion |
|---|---|---|
| Details | Sigma BP-51 Li-ion rechargeable battery (included) | Sony NP-FZ100 Li-ion rechargeable battery - 2280 mAh (included) |
| Battery Life | Photo shooting - 280 shots Video recording - 70 minutes |
Photo shooting - 510 shots (EVF on) Photo shooting - 600 shots (LCD Monitor on) Video recording - 80 minutes (EVF on) Video recording - 135 minutes (LCD Monitor on) |
| CONNECTIONS | Sigma fp | Sony Alpha7s III ILCE-7SM3 |
|---|
| Interface | HDMI, USB 3.1 | HDMI, USB-C, Wireless LAN, NFC (Near Field Communication), Bluetooth 5.0 |
|---|---|---|
| Connectivity Features | - | Remote control via mobile devices, Wireless Image Transfer, PC Remote functions via Wi-Fi |
| Print Standard | - | Exif Print support, PRINT Image Matching |
| Tripod Mount Connection Point | 3 x 1/4" sockets | - |
| Flash Terminal | Hot shoe | Hot shoe |
| Connector Type | USB 3.2 Gen 1 (USB Type-C) HDMI output (19 pin micro HDMI Type D) Microphone / remote control (mini-phone stereo 3.5 mm) |
USB (USB Type-C) HDMI output (19 pin HDMI Type A) Microphone (mini-phone stereo 3.5 mm) Headphones (mini-phone stereo 3.5 mm) |
| FEATURES | Sigma fp | Sony Alpha7s III ILCE-7SM3 |
|---|
| Self-Timer Delay | 10 sec, 2sec | 10 sec, 2sec, 5 sec |
|---|---|---|
| Continuous Shooting Speed | 3 frames per second, 5 frames per second, 18 frames per second | 8 frames per second, 3 frames per second, 10 frames per second, 6 frames per second |
| HDR Mode | Multi Frame HDR mode | - |
| Additional Features | Built-in speaker, AE lock, AF lock, USB charging, Bayer mosaic RGB filter, no Optical Low Pass Filter (OLFP) | Built-in speaker, digital image rotation, camera orientation detection, histogram display, shadow point display, interval shooting mode, highlight point display, Dynamic Range Optimizer, USB charging, built-in help guide, Chromatic Aberration Compensation (CAC), HDR image enhancement technology, Intelligent AUTO (iAUTO), fast motion recording, Lens Distortion Compensation (LDC), noise reduction over long exposures, high ISO speed noise reduction, silent shooting, BRAVIA Sync function, PhotoTV HD, GPS via mobile, slow motion recording, peripheral shading correction, anti-flicker, Hybrid Log-Gamma (HLG) recording |
| OTHERS | Sigma fp | Sony Alpha7s III ILCE-7SM3 |
|---|
| Included Accessories | Carrying strap, body cap, AC power adaptor, USB cable, strap holder, hot shoe unit | - |
|---|---|---|
| Max Operating Temperature | 40 °C | 40 °C |
| Min Operating Temperature | 0 °C | 0 °C |
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