Detailed comparison and review of Sony Alpha7 III ILCE-7M3 + Zoom lens 24 - 105 mm - f/4.0 FE G OSS - zoom 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 Alpha7 III ILCE-7M3 + Zoom lens 24 - 105 mm - f/4.0 FE G OSS - zoom | Pentax K-3 Mark III |
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| Product Type | Digital camera - 4K - mirrorless system | Digital camera - 4K - SLR with Live View mode, movie recording |
|---|---|---|
| Lens Included | Body only | Body only |
| Height | 9.56 cm | 10.35 cm |
| Width | 12.69 cm | 13.45 cm |
| Depth | 7.37 cm | 7.35 cm |
| Weight | 650 g | 735 g |
| Weight Details | Camera with battery and memory card: 650 g | Camera body only: 735 g Camera with battery and memory card: 820 g |
| Body Material | - | Magnesium alloy |
| Enclosure Colour | Black | Black | Silver |
| Protection | Dust-resistant, moisture-resistant | Weatherproof, dust-resistant |
| Digital Zoom | 4x | - |
| Navigation | - | GPS receiver |
| SENSOR | Sony Alpha7 III ILCE-7M3 + Zoom lens 24 - 105 mm - f/4.0 FE G OSS - zoom | Pentax K-3 Mark III |
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| Sensor Resolution | 24.2 Megapixel | 25.73 Megapixel |
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| Optical Sensor Type | Exmor R CMOS | CMOS |
| Total Pixels | 25,300,000 pixels | 26,780,000 pixels |
| Effective Sensor Resolution | 24,200,000 pixels | 25,730,000 pixels |
| Optical Sensor Size | Full Frame (35.6 x 23.8 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 | Digital level metre |
| PROCESSOR | Sony Alpha7 III ILCE-7M3 + Zoom lens 24 - 105 mm - f/4.0 FE G OSS - zoom | Pentax K-3 Mark III |
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| Image Processor | BIONZ X | - |
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| LENS | Sony Alpha7 III ILCE-7M3 + Zoom lens 24 - 105 mm - f/4.0 FE G OSS - zoom | Pentax K-3 Mark III |
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| Type | Zoom lens 24 - 105 mm - f/4.0 FE G OSS - zoom | - |
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| Focal Length Equivalent to 35mm Camera | 36 - 157.5mm | - |
| Focus Adjustment | Automatic, manual | - |
| Min Focus Distance | 38 cm | - |
| Max View Angle | 84 degree(s) | - |
| Zoom Adjustment | Manual | - |
| Lens Construction | 14 groups / 17 elements | - |
| Filter Size | 77 mm | - |
| Lens Mounting Type | Sony E-mount | Pentax K |
| Features | ED glass, aspherical lens, dustproof, AA (advanced aspherical) lens, moisture-resistant, Direct Drive Super Sonic wave Motor (DDSSM), fluorine coating, Nano AR Coating | - |
| FOCUSING | Sony Alpha7 III ILCE-7M3 + Zoom lens 24 - 105 mm - f/4.0 FE G OSS - zoom | Pentax K-3 Mark III |
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| Auto Focus | TTL contrast and phase detection | TTL contrast and phase detection |
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| Auto Focus Points (Zones) Qty | 693 | 101 |
| Auto Focus Features | Focus Peaking function | - |
| AE/AF Control | Face-priority AF, Touch Area AF | Auto-area AF, Zone AF, Expanded area AF |
| Face Detection | Face-priority AF function | Yes |
| VIEWFINDER | Sony Alpha7 III ILCE-7M3 + Zoom lens 24 - 105 mm - f/4.0 FE G OSS - zoom | Pentax K-3 Mark III |
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| Viewfinder Type | Electronic - OLED | Optical - fixed eye-level pentaprism |
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| 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, colour temperature control | Auto eye sensor |
| EXPOSURE & WHITE BALANCE | Sony Alpha7 III ILCE-7M3 + Zoom lens 24 - 105 mm - f/4.0 FE G OSS - zoom | Pentax K-3 Mark III |
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| ISO (Max) | 204800 | 1600000 |
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| Native ISO | 100-51200 | - |
| Extended ISO (Max) | 204800 | - |
| Extended ISO (Min) | 50 | - |
| Light Sensitivity | ISO 50, ISO 102400, ISO 204800, ISO 100-51200 | 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, automatic, manual, aperture-priority, shutter-priority | Programme, bulb, automatic, manual, aperture-priority, shutter-priority, ISO priority, shutter & aperture priority |
| Bracketing Modes | Flash Exposure Bracketing, white balance bracketing | Depth of field bracketing, motion bracketing |
| Shooting Programs | Landscape, portrait mode, macro, night portrait, night scene, sports mode, sunset | - |
| Special Effects | Black & White, Sepia, Neutral, Vivid, sunset, landscape, portrait, clear, deep, light, autumn leaves, Retro, partial colour, Toy camera, Posterisation, High contrast monochrome, Pop Colour, Rich-tone monochrome, Soft High-key, Night Scene, Standard, Style Box, Posterisation (B/W) | 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, fluorescent, cloudy, Flash, daylight, shade, fluorescent light (cool white), fluorescent light (daylight), fluorescent light (warm white), Underwater, 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, 5, 9 steps in 1/3, 1/2, 2/3, 1, 2 or 3 EV 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 Alpha7 III ILCE-7M3 + Zoom lens 24 - 105 mm - f/4.0 FE G OSS - zoom | Pentax K-3 Mark III |
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| Type | 2.95" LCD display | 3.2" LCD display |
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| Touch Screen | Yes | Yes |
| Display Format | 921,600 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 Alpha7 III ILCE-7M3 + Zoom lens 24 - 105 mm - f/4.0 FE G OSS - zoom | Pentax K-3 Mark III |
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| Digital Video Format | AVCHD, XAVC S | H.264, MOV |
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| Image Recording Format | JPEG, RAW, RAW + JPEG | JPEG, DNG (RAW), PEF (RAW) |
| Max Video Resolution | 3840 x 2160 | 3840 x 2160 |
| Audio Signal Format | Dolby Digital AC-3 (2 channel), Linear PCM | - |
| Microphone Operation Mode | Stereo | Stereo |
| Microphone Features | - | Wind noise reduction, sensitivity control |
| MEMORY | Sony Alpha7 III ILCE-7M3 + Zoom lens 24 - 105 mm - f/4.0 FE G OSS - zoom | Pentax K-3 Mark III |
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| Memory Card Slot | Memory Stick PRO Duo card, SD card | Dual SD card |
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| 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, SDHC UHS-II Memory Card, SDXC UHS-II 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 | 6000 x 4000 3936 x 2624 3008 x 2000 1968 x 1312 6000 x 3376 3936 x 2216 3008 x 1688 1968 x 1112 |
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 p - 30 fps - 100Mbps XAVC S - 3840 x 2160 p - 24 fps - 100Mbps XAVC S - 3840 x 2160 p - 30 fps - 60Mbps XAVC S - 3840 x 2160 p - 24 fps - 60Mbps XAVC S - 1920 x 1080 p - 120 fps - 100Mbps XAVC S - 1920 x 1080 p - 120 fps - 60Mbps XAVC S - 1920 x 1080 p - 60 fps - 50Mbps XAVC S - 1920 x 1080 p - 30 fps - 50Mbps XAVC S - 1920 x 1080 p - 24 fps - 50Mbps XAVC S - 1920 x 1080 p - 60 fps - 25Mbps XAVC S - 1920 x 1080 p - 30 fps - 16Mbps AVCHD - 1920 x 1080 i - 60 fps - 24Mbps AVCHD - 1920 x 1080 i - 60 fps - 17Mbps XAVC S - 3840 x 2160 p - 25 fps - 100Mbps XAVC S - 3840 x 2160 p - 25 fps - 60Mbps XAVC S - 1920 x 1080 p - 100 fps - 100Mbps XAVC S - 1920 x 1080 p - 100 fps - 60Mbps XAVC S - 1920 x 1080 p - 50 fps - 50Mbps XAVC S - 1920 x 1080 p - 25 fps - 50Mbps AVCHD - 1920 x 1080 i - 50 fps - 24Mbps AVCHD - 1920 x 1080 i - 50 fps - 17Mbps |
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 Alpha7 III ILCE-7M3 + Zoom lens 24 - 105 mm - f/4.0 FE G OSS - zoom | Pentax K-3 Mark III |
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| Battery Type | Sony NP-FZ100 Lithium Ion | Pentax D-Li90 Lithium Ion |
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| Details | Sony NP-FZ100 Li-ion rechargeable battery - 2280 mAh (included) | Pentax D-Li90 Li-ion rechargeable battery (included) |
| Battery Life | Photo shooting - 710 shots (LCD Monitor on) Photo shooting - 610 shots (EVF on) Video recording - 2.08 hours (LCD Monitor on) Voice recording - 1.92 hours (EVF on) |
Photo shooting - 800 shots Playback - 250 minutes |
| CONNECTIONS | Sony Alpha7 III ILCE-7M3 + Zoom lens 24 - 105 mm - f/4.0 FE G OSS - zoom | Pentax K-3 Mark III |
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| Interface | HDMI, USB 3.1, IEEE 802.11b/g/n, NFC (Near Field Communication), Bluetooth 4.1 | HDMI, USB-C, IEEE 802.11b/g/n, Bluetooth 4.2 |
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| Connectivity Features | Remote control via mobile devices, remote live view, Wireless Image Transfer | 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 3.1 (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) |
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 Alpha7 III ILCE-7M3 + Zoom lens 24 - 105 mm - f/4.0 FE G OSS - zoom | Pentax K-3 Mark III |
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| Self-Timer Delay | 10 sec, 2sec, 5 sec | 2sec, 12sec |
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| Continuous Shooting Speed | 8 frames per second, 10 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, sharpness control, digital image rotation, camera orientation detection, histogram display, saturation control, shadow point display, highlight point display, takes photos while film recording, contrast control, Dynamic Range Optimizer, USB charging, built-in help guide, Dolby Digital Stereo Creator, Intelligent AUTO (iAUTO), Clear Image Zoom, noise reduction over long exposures, Lens Distortion Correction, high ISO speed noise reduction, PlayMemories Camera Apps support, silent shooting, BRAVIA Sync function, PhotoTV HD, GPS via mobile, S-Log2 gamma setting, peripheral shading correction, chromatic aberration correction, anti-flicker, Hybrid Log-Gamma (HLG) recording, S-Log3 gamma setting | 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 Alpha7 III ILCE-7M3 + Zoom lens 24 - 105 mm - f/4.0 FE G OSS - zoom | Pentax K-3 Mark III |
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| Included Accessories | Eyepiece cover, lens hood, dust cap, body cap, shoulder strap, AC power adaptor, shoe cap, micro-USB cable | Eyepiece cover, carrying strap, battery charger, body cap, USB cable, eyecup, shoe cap, sync terminal cover |
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| 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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