Detailed comparison and review of Sony Alpha7s II ILCE-7SM2 and Pentax K-3 Mark III. With our comprehensive overview, you can simply compare design, sensors, proximity characteristics, memory capacities, but also other key features of both cameras and easily decide which one is the right choice for you. Our goal is to help you identify the main differences between products and find the camera that best fits your needs and expectations.
| DESIGN AND DIMENSIONS | Sony Alpha7s II ILCE-7SM2 | Pentax K-3 Mark III |
|---|
| Product Type | Digital camera - 4K - mirrorless system | Digital camera - 4K - SLR with Live View mode, movie recording |
|---|---|---|
| Lens Included | Body only | Body only |
| Height | 9.57 cm | 10.35 cm |
| Width | 12.69 cm | 13.45 cm |
| Depth | 6.03 cm | 7.35 cm |
| Weight | 584 g | 735 g |
| Weight Details | - | Camera body only: 735 g Camera with battery and memory card: 820 g |
| Body Material | - | Magnesium alloy |
| Enclosure Colour | Black | Black | Silver |
| Protection | - | Weatherproof, dust-resistant |
| Navigation | - | GPS receiver |
| SENSOR | Sony Alpha7s II ILCE-7SM2 | Pentax K-3 Mark III |
|---|
| Sensor Resolution | 12.2 Megapixel | 25.73 Megapixel |
|---|---|---|
| Optical Sensor Type | Exmor CMOS | CMOS |
| Total Pixels | 12,400,000 pixels | 26,780,000 pixels |
| Effective Sensor Resolution | 12,200,000 pixels | 25,730,000 pixels |
| Optical Sensor Size | Full Frame (35.8 x 23.9 mm) | APS-C (23.3 x 15.5 mm) |
| Frame Rate (Max Resolution) | 30 fps | 30 fps |
| Sensor Dust Reduction | Yes | - |
| Sensor Features | Dust Reduction (image sensor vibration), Anti-Dust coating | Dust Reduction (image sensor vibration), anti-aliasing simulator function |
| Image Stabiliser | Optical (5-axis Steady Shot) | Optical SR II (5-axis image sensor shift mechanism) |
| Built-in Optical Image Stabiliser | Yes | Yes |
| Sensors | - | Digital level metre |
| PROCESSOR | Sony Alpha7s II ILCE-7SM2 | Pentax K-3 Mark III |
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| Image Processor | BIONZ X | - |
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| LENS | Sony Alpha7s II ILCE-7SM2 | Pentax K-3 Mark III |
|---|
| Lens Mounting Type | Sony E-mount | Pentax K |
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| FOCUSING | Sony Alpha7s II ILCE-7SM2 | Pentax K-3 Mark III |
|---|
| Auto Focus | TTL contrast detection | TTL contrast and phase detection |
|---|---|---|
| Auto Focus Points (Zones) Qty | 169 | 101 |
| Auto Focus Features | Focus Peaking function, Manual Focus Check Live View | - |
| AE/AF Control | Flex Focus Point, Face-priority AF, Subject-tracking AF, Eye detection AF | Auto-area AF, Zone AF, Expanded area AF |
| Face Detection | Face Recognition | Yes |
| VIEWFINDER | Sony Alpha7s II ILCE-7SM2 | Pentax K-3 Mark III |
|---|
| Viewfinder Type | Electronic - OLED | Optical - fixed eye-level pentaprism |
|---|---|---|
| Viewfinder Colour Support | Colour | - |
| Viewfinder Diagonal Size | 0.5" | - |
| Viewfinder Resolution | 2,359,296 pixels | - |
| Optical Viewfinder Field Coverage | 100% | 100% |
| Optical Viewfinder Magnification | 0.78x | 1.05x |
| Optical Viewfinder Dioptric Correction Range | -4 to +3 | -4 to +1 |
| Features | Viewfinder brightness control | Auto eye sensor |
| EXPOSURE & WHITE BALANCE | Sony Alpha7s II ILCE-7SM2 | Pentax K-3 Mark III |
|---|
| ISO (Max) | 409600 | 1600000 |
|---|---|---|
| Extended ISO (Max) | 409600 | - |
| Extended ISO (Min) | 50 | - |
| Light Sensitivity | ISO auto (100-12800), ISO 100-102400, ISO 50-409600 | ISO auto, ISO 100-1600000 |
| Exposure Metering | Multi-segment, centre-weighted, spot | Multi-segment, centre-weighted, spot, highlight-weighted |
| Exposure Metering Zones | 1200 | - |
| Exposure Modes | Programme, bulb, automatic, manual, aperture-priority, shutter-priority | Programme, bulb, automatic, manual, aperture-priority, shutter-priority, ISO priority, shutter & aperture priority |
| Bracketing Modes | Flash Exposure Bracketing | Depth of field bracketing, motion bracketing |
| Shooting Programs | Landscape, portrait mode, action, macro, night portrait, night scene, sports mode, sunset, handheld twilight, anti-motion blur | - |
| Special Effects | Black & White, Sepia, Neutral, Vivid, sunset, soft focus, illustration, landscape, portrait, Water Colour, miniature, clear, deep, autumn leaves, Retro, HDR, partial colour, Toy camera, Posterisation, High contrast monochrome, Pop Colour, Rich-tone monochrome, Soft High-key, Night Scene, Lighting, Standard | Soft, Slim, fisheye, natural, bright, Vibrant, monochrome, Muted, Flat, landscape, portrait, miniature, Cross Process, Retro, Colour Extract, Toy camera, High contrast, Colour Invert, Bleach Bypass, Radiant, Reversal Film, Shading, Tone Expansion, Bold Monochrome, Unicolour Bold, Colour replace, Grainy Monochrome |
| White Balance | Custom, automatic, presets | Custom, automatic, presets |
| White Balance Presets | Incandescent, cloudy, Flash, daylight, shade, fluorescent light (cool white), fluorescent light (daylight), fluorescent light (warm white), 2500K - 9900K, fluorescent light (daylight white) | Cloudy, tungsten light, daylight, shade, fluorescent light (cool white), fluorescent light (daylight), fluorescent light (warm white), Color Temperature Enhancement (CTE), fluorescent light (daylight white) |
| Shutter Type | Mechanical electronically-controlled | 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 1/2 or 1/3 EV steps | ±5 EV range, in 1/2 or 1/3 EV steps |
| Auto Exposure Bracketing | 3 or 5 steps | - |
| White Balance Bracketing | Yes | - |
| X-sync Speed | 1/250sec | 1/200sec |
| Exposure Range | EV -3-20 (ISO 100) | EV -3-20 (ISO 100) |
| DISPLAY | Sony Alpha7s II ILCE-7SM2 | Pentax K-3 Mark III |
|---|
| Type | 3" LCD display | 3.2" LCD display |
|---|---|---|
| Touch Screen | - | Yes |
| Display Format | 1,228,800 pixels | 1,620,000 pixels |
| Display Form Factor | Folding | Built-in |
| Display Features | Display brightness control | Colour control, contrast control, display brightness control, night vision LCD display |
| VIDEOGRAPHY / CAMCORDER | Sony Alpha7s II ILCE-7SM2 | Pentax K-3 Mark III |
|---|
| Digital Video Format | AVCHD, H.264, XAVC S, AVC | H.264, MOV |
|---|---|---|
| Image Recording Format | JPEG, RAW, RAW + JPEG | JPEG, DNG (RAW), PEF (RAW) |
| Max Video Resolution | 3840 x 2160 | 3840 x 2160 |
| Surround Sound | Dolby Digital AC-3 (2 channel) recording | - |
| Microphone Operation Mode | Stereo | Stereo |
| Microphone Features | - | Wind noise reduction, sensitivity control |
| MEMORY | Sony Alpha7s II ILCE-7SM2 | Pentax K-3 Mark III |
|---|
| Memory Card Slot | Memory Stick Micro (M2) card, Memory Stick PRO Duo card, SD card | Dual SD card |
|---|---|---|
| Supported Memory Cards | SD Memory Card, Memory Stick PRO Duo, SDXC Memory Card, SDHC Memory Card, Memory Stick PRO-HG Duo, Memory Stick Micro Mark2, SDHC UHS-I Memory Card, SDXC UHS-I 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 |
| Memory Card Included | No | No |
| Image Storage | JPEG 4240 x 2832 JPEG 2768 x 1848 JPEG 2128 x 1416 JPEG 1376 x 920 JPEG 4240 x 2384 JPEG 2768 x 1560 JPEG 2128 x 1200 JPEG 1376 x 776 |
RAW 6192 x 4128 JPEG 6192 x 4128 JPEG 4752 x 3168 JPEG 3648 x 2432 JPEG 1920 x 1280 |
| Video Capture | XAVC S - 3840 x 2160 - 30 fps XAVC S - 3840 x 2160 - 24Mbps XAVC S - 1920 x 1080 - 60 fps XAVC S - 1920 x 1080 - 30 fps XAVC S - 1920 x 1080 - 24 fps XAVC S - 1920 x 1080 - 120 fps AVCHD - 1920 x 1080 - 60 fps AVCHD - 1920 x 1080 - 24 fps H.264 - 1920 x 1080 - 60 fps H.264 - 1920 x 1080 - 30 fps H.264 - 1280 x 720 - 30 fps |
H.264 - 3840 x 2160 p - 30 fps H.264 - 3840 x 2160 p - 24 fps H.264 - 1920 x 1080 p - 60 fps H.264 - 1920 x 1080 p - 30 fps H.264 - 1920 x 1080 p - 24 fps |
| BATTERY AND CHARGING | Sony Alpha7s II ILCE-7SM2 | Pentax K-3 Mark III |
|---|
| Battery Type | Sony NP-FW50 Lithium Ion | Pentax D-Li90 Lithium Ion |
|---|---|---|
| Details | Sony NP-FW50 Li-ion rechargeable battery - 1080 mAh (included) | Pentax D-Li90 Li-ion rechargeable battery (included) |
| Battery Life | Photo shooting - 310 shots (EVF on) Photo shooting - 370 shots (LCD Monitor on) |
Photo shooting - 800 shots Playback - 250 minutes |
| CONNECTIONS | Sony Alpha7s II ILCE-7SM2 | Pentax K-3 Mark III |
|---|
| Interface | HDMI, USB 2.0, IEEE 802.11b/g/n, NFC (Near Field Communication) | HDMI, USB-C, IEEE 802.11b/g/n, Bluetooth 4.2 |
|---|---|---|
| Connectivity Features | Remote control via mobile devices, remote live view | Remote control via mobile devices, remote live view, Wireless Image Transfer |
| Print Standard | DPOF support, Exif Print support, PRINT Image Matching | Exif Print support |
| Computer Connectivity | - | Mac, Windows |
| Flash Terminal | Hot shoe | Hot shoe, PC terminal |
| Connector Type | USB 2.0 HDMI output (19 pin micro HDMI Type D) Microphone (mini-phone stereo 3.5 mm) Headphones (mini-phone stereo 3.5 mm) |
USB 3.2 Gen 1 (USB Type-C) HDMI output (19 pin micro HDMI Type D) Microphone (mini-phone stereo 3.5 mm) Headphones (mini-phone stereo 3.5 mm) Remote control (sub-mini phone 2.5 mm) |
| FEATURES | Sony Alpha7s II ILCE-7SM2 | Pentax K-3 Mark III |
|---|
| Self-Timer Delay | 10 sec, 2sec, 5 sec | 2sec, 12sec |
|---|---|---|
| Continuous Shooting Speed | 2.5 frames per second, 5 frames per second | 2.5 frames per second, 12 frames per second, 7 frames per second |
| HDR Mode | Auto HDR mode | Auto HDR mode |
| Additional Features | Built-in speaker, RGB primary colour filter, sharpness control, histogram display, AE lock, AF lock, saturation control, Sweep Panorama technology, contrast control, Dynamic Range Optimizer, peripheral illumination correction, Dolby Digital Stereo Creator, Chromatic Aberration Compensation (CAC), x.v.Colour technology, Multi-Frame Noise Reduction, Intelligent AUTO (iAUTO), High ISO NR, high-speed recording, Superior Auto mode, noise reduction over long exposures, BRAVIA Sync function, PhotoTV HD, distortion correction function, Clean HDMI output for 4K movies | Audio recording, date/time stamp, digital image rotation, camera orientation detection, histogram display, AE lock, AF lock, cropping an image, resizing an image, interval shooting mode, in-camera film editing, in-camera RAW processing, peripheral illumination correction, horizon correction, NR Slow Shutter, High ISO NR, Lens Distortion Correction, primary colour filter, Automatic composition correction function, colour moire correction, Lateral Chromatic Aberration Correction, diffraction correction, Pixel Shift Resolution technology, colour fringe correction, multiple exposure capture, GPS stamp, D-range correction |
| OTHERS | Sony Alpha7s II ILCE-7SM2 | Pentax K-3 Mark III |
|---|
| Included Accessories | Eyepiece cover, battery charger, shoulder strap, AC power adaptor, shoe cap, micro-USB cable, cable protector | Eyepiece cover, carrying strap, battery charger, body cap, USB cable, eyecup, shoe cap, sync terminal cover |
|---|---|---|
| Software | - | Digital Camera Utility 5 |
| Max Operating Temperature | 40 °C | 40 °C |
| Min Operating Temperature | 0 °C | -10 °C |
| Service & Support | - | Limited warranty - 1 year |
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