Detailed comparison and review of Sony Alpha7R ILCE-7R 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 Alpha7R ILCE-7R | Pentax K-3 Mark III |
|---|
| Product Type | Digital camera - 1080p - mirrorless system | Digital camera - 4K - SLR with Live View mode, movie recording |
|---|---|---|
| Lens Included | Body only | Body only |
| Height | 9.44 cm | 10.35 cm |
| Width | 12.69 cm | 13.45 cm |
| Depth | 4.82 cm | 7.35 cm |
| Weight | 407 g | 735 g |
| Weight Details | - | Camera body only: 735 g Camera with battery and memory card: 820 g |
| Body Material | Magnesium alloy | Magnesium alloy |
| Enclosure Colour | Black | Black | Silver |
| Protection | Splashproof, dust-resistant | Weatherproof, dust-resistant |
| Digital Zoom | 4x | - |
| Navigation | - | GPS receiver |
| SENSOR | Sony Alpha7R ILCE-7R | Pentax K-3 Mark III |
|---|
| Sensor Resolution | 36.4 Megapixel | 25.73 Megapixel |
|---|---|---|
| Optical Sensor Type | Exmor CMOS | CMOS |
| Total Pixels | 36,800,000 pixels | 26,780,000 pixels |
| Effective Sensor Resolution | 36,400,000 pixels | 25,730,000 pixels |
| Optical Sensor Size | Full Frame (35.9 x 24 mm) | APS-C (23.3 x 15.5 mm) |
| Frame Rate (Max Resolution) | - | 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 SR II (5-axis image sensor shift mechanism) |
| Built-in Optical Image Stabiliser | - | Yes |
| Sensors | Digital level metre | Digital level metre |
| PROCESSOR | Sony Alpha7R ILCE-7R | Pentax K-3 Mark III |
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| Image Processor | BIONZ X | - |
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| LENS | Sony Alpha7R ILCE-7R | Pentax K-3 Mark III |
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| Lens Mounting Type | Sony E-mount | Pentax K |
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| FOCUSING | Sony Alpha7R ILCE-7R | Pentax K-3 Mark III |
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| Auto Focus | TTL contrast and phase detection | TTL contrast and phase detection |
|---|---|---|
| Auto Focus Points (Zones) Qty | 25 | 101 |
| Auto Focus Features | Focus Peaking function, Manual Focus Check Live View | - |
| AE/AF Control | Face-priority AF, Subject-tracking AF, Eye detection AF | Auto-area AF, Zone AF, Expanded area AF |
| Face Detection | Face Detection AF/AE/FE/WB, Smile Shutter | Yes |
| VIEWFINDER | Sony Alpha7R ILCE-7R | 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 | 0.71x | 1.05x |
| Optical Viewfinder Dioptric Correction Range | -4 to +3 | -4 to +1 |
| Features | Viewfinder brightness control | Auto eye sensor |
| EXPOSURE & WHITE BALANCE | Sony Alpha7R ILCE-7R | Pentax K-3 Mark III |
|---|
| ISO (Max) | 25600 | 1600000 |
|---|---|---|
| Native ISO | 100-51200 | - |
| Light Sensitivity | ISO 50, ISO auto (100-6400), ISO 100-25600 | 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 | - | Depth of field bracketing, motion bracketing |
| Shooting Programs | Landscape, portrait mode, 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, light, autumn leaves, Retro, partial colour, Toy camera, Posterisation, High contrast monochrome, Pop Colour, HDR Painting, Rich-tone monochrome, Soft High-key, Night Scene | 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 | - | 1/200sec |
| Exposure Range | EV 0-20 (ISO 100) | EV -3-20 (ISO 100) |
| DISPLAY | Sony Alpha7R ILCE-7R | Pentax K-3 Mark III |
|---|
| Type | 3" LCD display | 3.2" LCD display |
|---|---|---|
| Touch Screen | - | Yes |
| Display Format | 921,600 pixels | 1,620,000 pixels |
| Display Form Factor | Folding | Built-in |
| Display Features | Contrast control, display brightness control, TRILUMINOS Colour technology | Colour control, contrast control, display brightness control, night vision LCD display |
| FLASH | Sony Alpha7R ILCE-7R | Pentax K-3 Mark III |
|---|
| Features | AF illuminator | - |
|---|
| VIDEOGRAPHY / CAMCORDER | Sony Alpha7R ILCE-7R | Pentax K-3 Mark III |
|---|
| Digital Video Format | AVCHD, H.264 | H.264, MOV |
|---|---|---|
| Image Recording Format | JPEG, RAW, RAW + JPEG | JPEG, DNG (RAW), PEF (RAW) |
| Max Video Resolution | 1920 x 1080 | 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 Alpha7R ILCE-7R | Pentax K-3 Mark III |
|---|
| 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, Memory Stick PRO-HG Duo HX, SDHC Memory Card, Memory Stick PRO-HG Duo, 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 |
| Image Storage | 7360 x 4912 7360 x 4144 4800 x 3200 4800 x 2704 3680 x 2456 3680 x 2072 2400 x 1600 |
RAW 6192 x 4128 JPEG 6192 x 4128 JPEG 4752 x 3168 JPEG 3648 x 2432 JPEG 1920 x 1280 |
| Video Capture | AVCHD - 1920 x 1080 - 50 fps - 28Mbps AVCHD - 1920 x 1080 - 50 fps - 24Mbps AVCHD - 1920 x 1080 - 50 fps - 17Mbps AVCHD - 1920 x 1080 - 25 fps - 24Mbps AVCHD - 1920 x 1080 - 25 fps - 17Mbps H.264 - 1440 x 1080 - 25 fps - 12Mbps H.264 - 640 x 480 - 25 fps - 3Mbps |
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 Alpha7R ILCE-7R | 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 - 340 shots | Photo shooting - 800 shots Playback - 250 minutes |
| CONNECTIONS | Sony Alpha7R ILCE-7R | Pentax K-3 Mark III |
|---|
| Interface | Composite video/audio, HDMI, USB 2.0, Wireless LAN, NFC (Near Field Communication) | HDMI, USB-C, IEEE 802.11b/g/n, Bluetooth 4.2 |
|---|---|---|
| Connectivity Features | Remote control via mobile devices | Remote control via mobile devices, remote live view, Wireless Image Transfer |
| Print Standard | DPOF support, Exif Print support, PictBridge 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 Composite video/audio output Microphone Headphones |
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 Alpha7R ILCE-7R | Pentax K-3 Mark III |
|---|
| Self-Timer Delay | 10 sec, 2sec | 2sec, 12sec |
|---|---|---|
| Continuous Shooting Speed | 4 frames per second, 1.5 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, auto power save, sharpness control, camera orientation detection, histogram display, AE lock, AF lock, saturation control, Sweep Panorama technology, in-camera red-eye fix, shadow point display, highlight point display, Dynamic Range Optimizer, face detection, USB charging, built-in help guide, 25p Cinema Mode, Chromatic Aberration Compensation (CAC), Anti-motion Blur Mode, x.v.Colour technology, Shade Correction, Intelligent AUTO (iAUTO), Lens Distortion Compensation (LDC), no anti-aliasing filter, Superior Auto mode, noise reduction over long exposures, high ISO speed noise reduction, PlayMemories Camera Apps support, BRAVIA Sync function, PhotoTV HD | 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 Alpha7R ILCE-7R | Pentax K-3 Mark III |
|---|
| Included Accessories | Body cap, shoulder strap, AC power adaptor, USB cable | Eyepiece cover, carrying strap, battery charger, body cap, USB cable, eyecup, shoe cap, sync terminal cover |
|---|---|---|
| Software | Sony PlayMemories Home, Sony Image Data Converter 4.0 | Digital Camera Utility 5 |
| Max Operating Temperature | 40 °C | 40 °C |
| Min Operating Temperature | 0 °C | -10 °C |
| Service & Support | Limited warranty - 1 year | Limited warranty - 1 year |
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