In depth comparison and review of Sony Alpha NEX C3K + 18-55mm OSS and Pentax 645Z. 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 Alpha NEX C3K + 18-55mm OSS | Pentax 645Z |
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| Product Type | Digital camera - 720p - mirrorless system | Digital camera - 1080p - SLR with Live View mode, movie recording |
|---|---|---|
| Lens Included | 18-55mm OSS lens | Body only |
| Height | 6 cm | 11.7 cm |
| Width | 11 cm | 15.6 cm |
| Depth | 3.3 cm | 12.3 cm |
| Weight | 225 g | 1.47 kg |
| Weight Details | - | Camera body only: 1.47 kg Camera with battery and memory card: 1.55 kg |
| Enclosure Colour | Black | Silver | - |
| Protection | - | Dust-resistant, water-resistant |
| Optical Zoom | 3x | - |
| SENSOR | Sony Alpha NEX C3K + 18-55mm OSS | Pentax 645Z |
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| Sensor Resolution | 16.2 Megapixel | 51.4 Megapixel |
|---|---|---|
| Optical Sensor Type | Exmor APS HD CMOS | CMOS |
| Total Pixels | 16,500,000 pixels | 52,990,000 pixels |
| Effective Sensor Resolution | 16,200,000 pixels | 51,400,000 pixels |
| Optical Sensor Size | APS-C (23.5 x 15.6 mm) | - |
| Frame Rate (Max Resolution) | - | 30 fps |
| Sensor Dust Reduction | Yes | Yes |
| Sensor Features | Dust Reduction (image sensor vibration), Anti-Dust coating | Dust Reduction (image sensor vibration) |
| Image Stabiliser | Optical (Steady Shot) | - |
| PROCESSOR | Sony Alpha NEX C3K + 18-55mm OSS | Pentax 645Z |
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| Image Processor | BIONZ | - |
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| LENS | Sony Alpha NEX C3K + 18-55mm OSS | Pentax 645Z |
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| Type | Zoom lens - 3x zoom - 18 - 55 mm - f/3.5-5.6 - zoom | - |
|---|---|---|
| Focal Length Equivalent to 35mm Camera | 27 - 82.5mm | - |
| Focus Adjustment | Automatic, manual | - |
| Min Focus Distance | 25 cm | - |
| Max View Angle | 76 degree(s) | - |
| Zoom Adjustment | Manual | - |
| Lens Construction | 9 groups / 11 elements | - |
| Filter Size | 49 mm | - |
| Lens Mounting Type | Sony E-mount | Pentax 645AF |
| Features | Aspherical lens | - |
| FOCUSING | Sony Alpha NEX C3K + 18-55mm OSS | Pentax 645Z |
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| Auto Focus | TTL contrast detection | TTL contrast and phase detection |
|---|---|---|
| Auto Focus Points (Zones) Qty | 25 | 27 |
| Face Detection | Smile Shutter, face and smile detection | - |
| VIEWFINDER | Sony Alpha NEX C3K + 18-55mm OSS | Pentax 645Z |
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| Viewfinder Type | - | Optical - trapezoid prism |
|---|---|---|
| Optical Viewfinder Field Coverage | - | 98% |
| Optical Viewfinder Magnification | - | 0.62x |
| Optical Viewfinder Dioptric Correction Range | - | -3.5 to +2 |
| Field of View Crop Factor | 1.5 | 1.3 |
| EXPOSURE & WHITE BALANCE | Sony Alpha NEX C3K + 18-55mm OSS | Pentax 645Z |
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| ISO (Max) | 12800 | 204800 |
|---|---|---|
| Native ISO | - | 100-204800 |
| Light Sensitivity | ISO auto, ISO 200-12800 | ISO auto (100-204800), ISO 100-248000 |
| Exposure Metering | Multi-segment, centre-weighted, spot | Multi-segment, centre-weighted, spot |
| Exposure Metering Zones | 49 | - |
| Exposure Modes | Programme, bulb, automatic, manual, aperture-priority, shutter-priority | Programme, bulb, manual, aperture-priority, shutter-priority, ISO priority, shutter & aperture priority |
| Shooting Programs | Landscape, portrait mode, macro, night portrait, sports mode, sunset, handheld twilight, Night View | - |
| Special Effects | Black & White, Neutral, Vivid, sunset, landscape, portrait, Retro, partial colour, Toy camera, Posterisation, High Key, High contrast monochrome, Pop Colour | Natural, bright, Vibrant, monochrome, Muted, landscape, portrait, Cross Process, Bleach Bypass, Radiant, Reversal Film |
| White Balance | Custom, automatic, presets | Custom, automatic, presets |
| White Balance Presets | Incandescent, fluorescent, cloudy, Flash, daylight, shade, 2500K - 9900K (19 steps) | Tungsten light, Flash, daylight, shade, fluorescent light (cool white), fluorescent light (warm white), fluorescent light (daylight colour), fluorescent light (daylight white) |
| Shutter Type | - | Electronic |
| Max Shutter Speed | 1/4000 sec | 1/4000 sec |
| Min Shutter Speed | 30 sec | 30 sec |
| Exposure Compensation | ±2 EV range, in 1/3 EV steps | ±5 EV range, in 1/2 or 1/3 EV steps |
| Auto Exposure Bracketing | 3 steps in 1/3 or 2/3 EV steps | - |
| X-sync Speed | 1/160 sec | 1/125sec |
| Exposure Range | EV 0-20 (ISO 100) | EV -1-21 (ISO 200) |
| DISPLAY | Sony Alpha NEX C3K + 18-55mm OSS | Pentax 645Z |
|---|
| Type | 3" LCD display | 3.2" LCD display |
|---|---|---|
| Display Format | 921,600 pixels | 1,037,000 pixels |
| Display Form Factor | Folding | Folding |
| Display Features | Display brightness control | Display brightness control, display colour control |
| FLASH | Sony Alpha NEX C3K + 18-55mm OSS | Pentax 645Z |
|---|
| Camera Flash | Detachable flash | - |
|---|---|---|
| Guide Number (m / ISO 100) | 7 | - |
| Flash Modes | Fill-in mode, rear curtain sync, slow synchro, auto mode, flash OFF mode, red-eye reduction | - |
| Red-Eye Reduction | Yes | - |
| Features | AF illuminator, flash +/- compensation | - |
| External Flash Name | Sony HVL-F7S | - |
| VIDEOGRAPHY / CAMCORDER | Sony Alpha NEX C3K + 18-55mm OSS | Pentax 645Z |
|---|
| Digital Video Format | H.264 | MJPEG, H.264 |
|---|---|---|
| Image Recording Format | JPEG, RAW, RAW + JPEG, MPO | JPEG, RAW, RAW + JPEG |
| Max Video Resolution | 1280 x 720 | 1920 x 1080 |
| Microphone Operation Mode | Stereo | - |
| MEMORY | Sony Alpha NEX C3K + 18-55mm OSS | Pentax 645Z |
|---|
| 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 | SD Memory Card, SDXC Memory Card, SDHC Memory Card, SDHC UHS-I Memory Card, SDXC UHS-I Memory Card |
| Memory Card Included | - | No |
| Included Memory Card | 8 GB SDHC | - |
| Image Storage | 4912 x 3264 3568 x 2368 2448 x 1624 4912 x 2760 3568 x 2368 2448 x 1624 |
- |
| Video Capture | H.264 - 1280 x 720 - 30 fps - 9Mbps H.264 - 1280 x 720 - 30 fps - 6Mbps H.264 - 640 x 480 - 30 fps - 3Mbps |
- |
| BATTERY AND CHARGING | Sony Alpha NEX C3K + 18-55mm OSS | Pentax 645Z |
|---|
| Battery Type | Sony NP-FW50 Lithium Ion | Pentax D-Li90 Lithium Ion |
|---|---|---|
| Details | Li-ion rechargeable battery - 1080 mAh (included) | Pentax D-Li90 Li-ion rechargeable battery (included) |
| Battery Life | - | Photo shooting - 650 shots Playback - 6.67 hours |
| CONNECTIONS | Sony Alpha NEX C3K + 18-55mm OSS | Pentax 645Z |
|---|
| Interface | HDMI, USB 2.0 | HDMI, USB 3.0 |
|---|---|---|
| Print Standard | DPOF support, Exif Print support, PRINT Image Matching | - |
| Flash Terminal | Hot shoe | Hot shoe |
| Connector Type | USB 2.0 HDMI output |
USB 3.0 (24 pin Micro-USB-C) HDMI output (19 pin micro HDMI Type D) Microphone (mini-phone stereo 3.5 mm) DC power input |
| FEATURES | Sony Alpha NEX C3K + 18-55mm OSS | Pentax 645Z |
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| Self-Timer Delay | 10 sec, 2sec | 2sec, 12sec |
|---|---|---|
| Continuous Shooting Speed | 2.5 frames per second, 5.5 frames per second | 3 frames per second, 4.5 frames per second |
| HDR Mode | Auto HDR mode | - |
| Additional Features | Built-in speaker, RGB primary colour filter, digital noise reduction, date/time stamp, digital image rotation, camera orientation detection, histogram display, AE lock, AF lock, Intelligent Scene Recognition (iSCN), Sweep Panorama technology, LCD live view mode, shadow point display, highlight point display, Dynamic Range Optimizer, face detection, built-in help guide, automatic display brightness adjustment, Anti-motion Blur Mode, 3D Sweep Panorama technology, Constant AF Live View, Intelligent AUTO (iAUTO), NR Slow Shutter, High ISO NR | RGB primary colour filter, interval shooting mode, peripheral illumination correction, Eye-Fi Card Ready, NR Slow Shutter, High ISO NR, Lateral Chromatic Aberration Correction, distortion correction function, anti-aliasing filter simulator, diffraction correction |
| OTHERS | Sony Alpha NEX C3K + 18-55mm OSS | Pentax 645Z |
|---|
| Included Accessories | Battery charger, dust cap, body cap, lens cap, carrying case, shoulder strap, USB cable, flash carrying case | Carrying strap, battery charger, body cap, eyecup, shoe cap |
|---|---|---|
| Software | Drivers & Utilities, Adobe Photoshop Elements, Sony Picture Motion Browser, Sony Image Data Converter SR, Sony Image Data Lightbox SR | Drivers & Utilities |
| Max Operating Temperature | 40 °C | - |
| Min Operating Temperature | 0 °C | - |
| Service & Support | Limited warranty - parts and labour - 1 year | - |
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