Detailed comparison and review of Sony Alpha7s ILCE-7S and Pentax K-3 II. 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 ILCE-7S | Pentax K-3 II |
|---|
| Product Type | Digital camera - 1080p - mirrorless system | Digital camera - 1080p - SLR with Live View mode, movie recording |
|---|---|---|
| Lens Included | Body only | Body only |
| Height | 9.44 cm | 10.25 cm |
| Width | 12.69 cm | 13.15 cm |
| Depth | 4.82 cm | 7.75 cm |
| Weight | 446 g | 700 g |
| Body Material | Magnesium alloy | Stainless steel, magnesium alloy |
| Enclosure Colour | Black | Black |
| Protection | - | Weatherproof, freezeproof, dust-resistant |
| Navigation | - | GPS receiver |
| SENSOR | Sony Alpha7s ILCE-7S | Pentax K-3 II |
|---|
| Sensor Resolution | 12.2 Megapixel | 24.35 Megapixel |
|---|---|---|
| Optical Sensor Type | Exmor CMOS | CMOS |
| Total Pixels | 12,400,000 pixels | 24,710,000 pixels |
| Effective Sensor Resolution | 12,200,000 pixels | 24,350,000 pixels |
| Optical Sensor Size | Full Frame (35.8 x 23.9 mm) | APS-C (23.5 x 15.6 mm) |
| Frame Rate (Max Resolution) | 60 fps | - |
| Sensor Dust Reduction | Yes | - |
| Sensor Features | Dust Reduction (image sensor vibration), Anti-Dust coating | Dust Reduction (image sensor vibration), anti-aliasing simulator function |
| Sensors | - | Accelerometer, magnetometer, digital level metre |
| PROCESSOR | Sony Alpha7s ILCE-7S | Pentax K-3 II |
|---|
| Image Processor | BIONZ X | - |
|---|
| LENS | Sony Alpha7s ILCE-7S | Pentax K-3 II |
|---|
| Lens Mounting Type | Sony E-mount | Pentax K |
|---|
| FOCUSING | Sony Alpha7s ILCE-7S | Pentax K-3 II |
|---|
| Auto Focus | TTL contrast detection | TTL contrast and phase detection |
|---|---|---|
| Auto Focus Points (Zones) Qty | 25 | 27 |
| Face Detection | - | Yes |
| VIEWFINDER | Sony Alpha7s ILCE-7S | Pentax K-3 II |
|---|
| 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 | 0.71x | 0.95x |
| Optical Viewfinder Dioptric Correction Range | -4 to +3 | -2.5 to +1.5 |
| Interchangeable Focusing Screens | - | Yes |
| Features | Viewfinder brightness control | - |
| EXPOSURE & WHITE BALANCE | Sony Alpha7s ILCE-7S | Pentax K-3 II |
|---|
| ISO (Max) | 409600 | 51200 |
|---|---|---|
| Native ISO | - | 100-51200 |
| Extended ISO (Max) | 409600 | - |
| Extended ISO (Min) | 50 | - |
| Light Sensitivity | ISO 50, ISO 100-409600 | ISO 100-51200, ISO auto (100-51200) |
| Exposure Metering | Multi-segment, centre-weighted, spot | Multi-segment, centre-weighted, spot |
| 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 | Dynamic Range Bracketing | - |
| Special Effects | - | Soft, Slim, Pastel, fisheye, natural, bright, Vibrant, Sketch, monochrome, Muted, landscape, portrait, Water Colour, miniature, Cross Process, Retro, Colour Extract, Toy camera, starburst, High contrast, Colour Invert, Bleach Bypass, Posterisation, Radiant, Reversal Film, Shading, Tone Expansion, Bold Monochrome, Unicolour Bold |
| White Balance | Custom, automatic, presets | Custom, automatic, presets |
| White Balance Presets | Incandescent, cloudy, daylight, shade, fluorescent light (cool white), fluorescent light (warm white), Underwater, 2500K - 9900K, fluorescent light (daylight colour), fluorescent light (daylight white) | Cloudy, tungsten light, Flash, 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 | 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 |
| Auto Exposure Bracketing | 3 or 5 steps | 2, 3 or 5 steps |
| White Balance Bracketing | Yes | - |
| X-sync Speed | - | 1/180 sec |
| Exposure Range | EV -3-20 (ISO 100) | EV -3-20 (ISO 100) |
| DISPLAY | Sony Alpha7s ILCE-7S | Pentax K-3 II |
|---|
| Type | 3" LCD display | 3.2" LCD display |
|---|---|---|
| Display Format | 921,600 pixels | 1,037,000 pixels |
| Display Form Factor | Folding | Built-in |
| Display Features | Display brightness control | Colour control, contrast control, display brightness control |
| VIDEOGRAPHY / CAMCORDER | Sony Alpha7s ILCE-7S | Pentax K-3 II |
|---|
| Digital Video Format | AVCHD, H.264, XAVC S | AVI, MJPEG, H.264 |
|---|---|---|
| Image Recording Format | JPEG, RAW, RAW + JPEG | JPEG, DNG (RAW), PEF (RAW) |
| Max Video Resolution | 1920 x 1080 | 1920 x 1080 |
| Surround Sound | Dolby Digital AC-3 (2 channel) recording | - |
| Microphone Operation Mode | Stereo | Mono |
| MEMORY | Sony Alpha7s ILCE-7S | Pentax K-3 II |
|---|
| Memory Card Slot | 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, SDHC UHS-I Memory Card, SDXC UHS-I Memory Card, Memory Stick XC-HG Duo | SD Memory Card, SDXC Memory Card, SDHC Memory Card, SDHC UHS-I Memory Card, SDXC UHS-I Memory Card |
| Memory Card Included | - | 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 6016 x 4000 JPEG 6016 x 4000 JPEG 4608 x 3072 JPEG 3072 x 2048 JPEG 1920 x 1280 |
| Video Capture | XAVC S - 1920 x 1080 - 50Mbps XAVC S - 1280 x 720 - 50Mbps AVCHD - 1920 x 1080 - 28Mbps AVCHD - 1920 x 1080 - 24Mbps AVCHD - 1920 x 1080 - 17Mbps AVCHD - 1920 x 1080 - 24Mbps AVCHD - 1920 x 1080 - 17Mbps H.264 - 1440 x 1080 - 12Mbps H.264 - 640 x 480 - 3Mbps |
1920 x 1080 1280 x 720 |
| BATTERY AND CHARGING | Sony Alpha7s ILCE-7S | Pentax K-3 II |
|---|
| 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 - 360 shots | Photo shooting - 720 shots Playback - 6.2 hours |
| CONNECTIONS | Sony Alpha7s ILCE-7S | Pentax K-3 II |
|---|
| Interface | Composite video/audio, HDMI, USB 2.0, Wireless LAN, NFC (Near Field Communication) | Composite video/audio, HDMI, USB 3.0 |
|---|---|---|
| Print Standard | Direct print, Exif Print support, PictBridge support | Exif Print support |
| Flash Terminal | Hot shoe | Hot shoe, PC terminal |
| Connector Type | USB 2.0 HDMI output Composite video/audio output Microphone Headphones |
USB 3.0 HDMI output (19 pin micro HDMI Type D) Microphone (mini-phone stereo 3.5 mm) Headphones (mini-phone stereo 3.5 mm) Remote control |
| FEATURES | Sony Alpha7s ILCE-7S | Pentax K-3 II |
|---|
| Self-Timer Delay | 10 sec, 2sec | 2sec, 12sec |
|---|---|---|
| Continuous Shooting Speed | 2.5 frames per second, 5 frames per second | 3 frames per second, 4.5 frames per second, 8.3 frames per second |
| HDR Mode | - | Auto HDR mode |
| Additional Features | Built-in speaker, RGB primary colour filter, histogram display, Sweep Panorama technology, Dynamic Range Optimizer, peripheral illumination correction, Dolby Digital Stereo Creator, Chromatic Aberration Compensation (CAC), high-speed recording, Superior Auto mode, BRAVIA Sync function, PhotoTV HD, distortion correction function, Clean HDMI output for 4K movies | Audio recording, sharpness control, digital image rotation, camera orientation detection, histogram display, AE lock, AF lock, cropping an image, resizing an image, saturation control, interval shooting mode, in-camera film editing, in-camera RAW processing, peripheral illumination correction, HDR image enhancement technology, Shade Correction, Eye-Fi Card Ready, High ISO NR, no anti-aliasing filter, Lens Distortion Correction, primary colour filter, Automatic composition correction function, colour moire correction, Lateral Chromatic Aberration Correction, Flucard Ready, anti-aliasing filter simulator, diffraction correction, Pixel Shift Resolution technology, colour fringe correction |
| OTHERS | Sony Alpha7s ILCE-7S | Pentax K-3 II |
|---|
| Included Accessories | Body cap, shoulder strap, additional battery, micro-USB cable, 2 battery chargers, 2 battery packs | Eyepiece cover, carrying strap, battery charger, body cap, eyecup, shoe cap, sync terminal cover |
|---|---|---|
| Software | Sony PlayMemories Home, Sony Image Data Converter 4.0 | Drivers & Utilities |
| Max Operating Temperature | 40 °C | 40 °C |
| Min Operating Temperature | 0 °C | -10 °C |
| Service & Support | Limited warranty - parts and labour - 2 years | - |
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