In depth comparison and review of Sony Alpha7R II ILCE-7RM2 and Pentax K-3 II. 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 | Sony Alpha7R II ILCE-7RM2 | Pentax K-3 II |
|---|
| Product Type | Digital camera - 4K - mirrorless system | Digital camera - 1080p - SLR with Live View mode, movie recording |
|---|---|---|
| Lens Included | Body only | Body only |
| Height | 9.57 cm | 10.25 cm |
| Width | 12.69 cm | 13.15 cm |
| Depth | 6.03 cm | 7.75 cm |
| Weight | 582 g | 700 g |
| Body Material | Magnesium alloy | Stainless steel, magnesium alloy |
| Enclosure Colour | Black | Black |
| Protection | Dust-resistant, moisture-resistant | Weatherproof, freezeproof, dust-resistant |
| Digital Zoom | 4x | - |
| Navigation | - | GPS receiver |
| SENSOR | Sony Alpha7R II ILCE-7RM2 | Pentax K-3 II |
|---|
| Sensor Resolution | 42.4 Megapixel | 24.35 Megapixel |
|---|---|---|
| Optical Sensor Type | Exmor CMOS | CMOS |
| Total Pixels | 43,600,000 pixels | 24,710,000 pixels |
| Effective Sensor Resolution | 42,400,000 pixels | 24,350,000 pixels |
| Optical Sensor Size | Full Frame (35.9 x 24 mm) | APS-C (23.5 x 15.6 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 (5-axis Steady Shot) | - |
| Built-in Optical Image Stabiliser | Yes | - |
| Sensors | - | Accelerometer, magnetometer, digital level metre |
| PROCESSOR | Sony Alpha7R II ILCE-7RM2 | Pentax K-3 II |
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| Image Processor | BIONZ X | - |
|---|
| LENS | Sony Alpha7R II ILCE-7RM2 | Pentax K-3 II |
|---|
| Lens Mounting Type | Sony E-mount | Pentax K |
|---|
| FOCUSING | Sony Alpha7R II ILCE-7RM2 | Pentax K-3 II |
|---|
| Auto Focus | TTL contrast and phase detection | TTL contrast and phase detection |
|---|---|---|
| Auto Focus Points (Zones) Qty | 399 | 27 |
| 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 | - |
| Face Detection | Face Recognition | Yes |
| VIEWFINDER | Sony Alpha7R II ILCE-7RM2 | 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 | 0.78x | 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 Alpha7R II ILCE-7RM2 | Pentax K-3 II |
|---|
| ISO (Max) | 102400 | 51200 |
|---|---|---|
| Native ISO | 100-51200 | 100-51200 |
| Light Sensitivity | ISO 50, ISO 102400, ISO auto (100-6400), ISO 100-25600 | 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 | Flash Exposure Bracketing | - |
| Shooting Programs | Landscape, portrait mode, macro, night portrait, night scene, sports mode, sunset, handheld twilight, anti-motion blur | - |
| Special Effects | 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, 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, Flash, daylight, shade, fluorescent light (cool white), fluorescent light (daylight), fluorescent light (warm white), 2500K - 9900K, 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 | ±5 EV range, in 1/2 or 1/3 EV steps |
| Auto Exposure Bracketing | - | 2, 3 or 5 steps |
| White Balance Bracketing | Yes | - |
| X-sync Speed | 1/250sec | 1/180 sec |
| Exposure Range | EV -3-20 (ISO 100) | EV -3-20 (ISO 100) |
| DISPLAY | Sony Alpha7R II ILCE-7RM2 | Pentax K-3 II |
|---|
| Type | 3" LCD display | 3.2" LCD display |
|---|---|---|
| Display Format | 1,228,800 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 Alpha7R II ILCE-7RM2 | 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 | 3840 x 2160 | 1920 x 1080 |
| Surround Sound | Dolby Digital AC-3 (2 channel) recording | - |
| Microphone Operation Mode | Stereo | Mono |
| MEMORY | Sony Alpha7R II ILCE-7RM2 | 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 | SD Memory Card, SDXC Memory Card, SDHC Memory Card, SDHC UHS-I Memory Card, SDXC UHS-I Memory Card |
| Memory Card Included | No | No |
| Image Storage | 7952 x 5304 7952 x 4472 5168 x 3448 5168 x 2912 3984 x 2656 3984 x 2240 2592 x 1728 2592 x 1456 |
RAW 6016 x 4000 JPEG 6016 x 4000 JPEG 4608 x 3072 JPEG 3072 x 2048 JPEG 1920 x 1280 |
| Video Capture | AVCHD - 1920 x 1080 - 60 fps - 28Mbps AVCHD - 1920 x 1080 - 60 fps - 24Mbps AVCHD - 1920 x 1080 - 60 fps - 17Mbps AVCHD - 1920 x 1080 - 24 fps - 24Mbps AVCHD - 1920 x 1080 - 24 fps - 17Mbps 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 XAVC S - 3840 x 2160 - 30 fps - 100Mbps XAVC S - 3840 x 2160 - 30 fps - 60Mbps XAVC S - 3840 x 2160 - 24 fps - 100Mbps XAVC S - 3840 x 2160 - 24 fps - 60Mbps XAVC S - 1920 x 1080 - 60 fps - 50Mbps XAVC S - 1920 x 1080 - 30 fps - 50Mbps XAVC S - 1920 x 1080 - 24 fps - 50Mbps XAVC S - 1280 x 720 - 120 fps - 50Mbps XAVC S - 3840 x 2160 - 25 fps - 100Mbps XAVC S - 3840 x 2160 - 25 fps - 60Mbps XAVC S - 1920 x 1080 - 50 fps - 50Mbps XAVC S - 1920 x 1080 - 25 fps - 50Mbps XAVC S - 1280 x 720 - 100 fps - 50Mbps H.264 - 1920 x 1080 - 60 fps - 28Mbps H.264 - 1920 x 1080 - 30 fps - 16Mbps H.264 - 1280 x 720 - 30 fps - 6Mbps H.264 - 1920 x 1080 - 50 fps - 28Mbps H.264 - 1920 x 1080 - 25 fps - 16Mbps H.264 - 1280 x 720 - 25 fps - 6Mbps |
1920 x 1080 1280 x 720 |
| BATTERY AND CHARGING | Sony Alpha7R II ILCE-7RM2 | 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 - 340 shots (LCD Monitor on) Photo shooting - 290 shots (EVF on) |
Photo shooting - 720 shots Playback - 6.2 hours |
| CONNECTIONS | Sony Alpha7R II ILCE-7RM2 | Pentax K-3 II |
|---|
| Interface | HDMI, USB 2.0, IEEE 802.11b/g/n, NFC (Near Field Communication) | Composite video/audio, HDMI, USB 3.0 |
|---|---|---|
| Connectivity Features | Remote control via mobile devices, remote live view | - |
| Print Standard | DPOF support, Exif Print support, PRINT Image Matching | Exif Print support |
| 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 3.0 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 Alpha7R II ILCE-7RM2 | 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 | Auto HDR mode |
| Additional Features | Built-in speaker, RGB primary colour filter, sharpness control, AE lock, AF lock, saturation control, Sweep Panorama technology, contrast control, Dynamic Range Optimizer, USB charging, built-in help guide, peripheral illumination correction, Chromatic Aberration Compensation (CAC), x.v.Colour technology, Multi-Frame Noise Reduction, Intelligent AUTO (iAUTO), High ISO NR, Lens Distortion Compensation (LDC), no anti-aliasing filter, Superior Auto mode, Clear Image Zoom, noise reduction over long exposures, PlayMemories Camera Apps support, BRAVIA Sync function, PhotoTV HD, Auto Object Framing | 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 Alpha7R II ILCE-7RM2 | Pentax K-3 II |
|---|
| Included Accessories | Battery charger, body cap, shoulder strap, AC power adaptor, shoe cap, micro-USB cable, cable protector | Eyepiece cover, carrying strap, battery charger, body cap, eyecup, shoe cap, sync terminal cover |
|---|---|---|
| Software | Sony PlayMemories Home | Drivers & Utilities |
| Max Operating Temperature | 40 °C | 40 °C |
| Min Operating Temperature | 0 °C | -10 °C |
| Service & Support | Limited warranty - parts and labour - 1 year | - |
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