Side by side comparison and review of Olympus OM-D E-M1 and Pentax 645Z. Compare design, sensors, zoom functions, batteries and other key specifications and features to simplify the choice of your perfect digital camera. Our goal is to make it easier for you to decide on the camera that will best meet your expectations by revealing the main differences between the products.
| DESIGN AND DIMENSIONS | Olympus OM-D E-M1 | Pentax 645Z |
|---|
| Product Type | Digital camera - 1080p - mirrorless system | Digital camera - 1080p - SLR with Live View mode, movie recording |
|---|---|---|
| Lens Included | Body only | Body only |
| Height | 9.35 cm | 11.7 cm |
| Width | 13.04 cm | 15.6 cm |
| Depth | 6.31 cm | 12.3 cm |
| Weight | 443 g | 1.47 kg |
| Weight Details | - | Camera body only: 1.47 kg Camera with battery and memory card: 1.55 kg |
| Body Material | Magnesium alloy | - |
| Enclosure Colour | Silver | Black | - |
| Protection | Splashproof, freezeproof, dust-resistant | Dust-resistant, water-resistant |
| SENSOR | Olympus OM-D E-M1 | Pentax 645Z |
|---|
| Sensor Resolution | 16.3 Megapixel | 51.4 Megapixel |
|---|---|---|
| Optical Sensor Type | Live MOS | CMOS |
| Total Pixels | 16,800,000 pixels | 52,990,000 pixels |
| Effective Sensor Resolution | 16,300,000 pixels | 51,400,000 pixels |
| Optical Sensor Size | Four Thirds (4/3") | - |
| Frame Rate (Max Resolution) | - | 30 fps |
| Sensor Dust Reduction | - | Yes |
| Sensor Features | - | Dust Reduction (image sensor vibration) |
| Image Stabiliser | Optical (5-axis image sensor shift mechanism) | - |
| Built-in Optical Image Stabiliser | Yes | - |
| Sensors | Digital level metre | - |
| PROCESSOR | Olympus OM-D E-M1 | Pentax 645Z |
|---|
| Image Processor | TruePic VII | - |
|---|
| LENS | Olympus OM-D E-M1 | Pentax 645Z |
|---|
| Lens Mounting Type | Micro Four Thirds | Pentax 645AF |
|---|
| FOCUSING | Olympus OM-D E-M1 | Pentax 645Z |
|---|
| Auto Focus | TTL contrast and phase detection | TTL contrast and phase detection |
|---|---|---|
| Auto Focus Points (Zones) Qty | - | 27 |
| AE/AF Control | Face-priority AF, Subject-tracking AF, Eye detection AF | - |
| Face Detection | Yes | - |
| VIEWFINDER | Olympus OM-D E-M1 | Pentax 645Z |
|---|
| Viewfinder Type | Built-in - electronic | Optical - trapezoid prism |
|---|---|---|
| Viewfinder Colour Support | Colour | - |
| Viewfinder Resolution | 2,360,000 pixels | - |
| Optical Viewfinder Field Coverage | 100% | 98% |
| Optical Viewfinder Magnification | 1.48x | 0.62x |
| Optical Viewfinder Dioptric Correction Range | -4 to +2 | -3.5 to +2 |
| Field of View Crop Factor | 2 | 1.3 |
| EXPOSURE & WHITE BALANCE | Olympus OM-D E-M1 | Pentax 645Z |
|---|
| ISO (Max) | 25600 | 204800 |
|---|---|---|
| Native ISO | - | 100-204800 |
| Light Sensitivity | ISO 200-25600, ISO auto (200-25600) | ISO auto (100-204800), ISO 100-248000 |
| Exposure Metering | Multi-segment, centre-weighted, spot | Multi-segment, centre-weighted, spot |
| Exposure Metering Zones | 324 | - |
| Exposure Modes | Programme, bulb, automatic, manual, aperture-priority, shutter-priority | Programme, bulb, manual, aperture-priority, shutter-priority, ISO priority, shutter & aperture priority |
| Bracketing Modes | Art Filter bracketing, ISO sensitivity bracketing | - |
| Shooting Programs | Landscape, portrait mode, macro, beach/snow, landscape-portrait, Children, fireworks, 3D image, panorama assist, night scene, sports mode, sunset, candle, high key, night scene with portrait, anti shake, low key, documents, nature macro, e-portrait, fisheye converter, wide converter, macro converter | - |
| Special Effects | Black & White, Sepia, soft focus, Water Colour, Diorama, Cross Process, Grainy Film, Light Tone, Pop Art, Pale & Light Colour, pin hole, Gentle Sepia, Dramatic Tone, Key Line, Star Light, Defocus, White Edge | 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, sunlight, Flash, shade, Underwater, 2000K - 14000K | 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 | 1/8000 sec | 1/4000 sec |
| Min Shutter Speed | 60 sec | 30 sec |
| Exposure Compensation | ±5 EV range, in 1, 1/2 or 1/3 EV steps | ±5 EV range, in 1/2 or 1/3 EV steps |
| X-sync Speed | - | 1/125sec |
| Exposure Range | EV 2-20 (ISO 100) | EV -1-21 (ISO 200) |
| DISPLAY | Olympus OM-D E-M1 | Pentax 645Z |
|---|
| Type | 3" LCD display | 3.2" LCD display |
|---|---|---|
| Touch Screen | Yes | - |
| Display Format | 1,037,000 pixels | 1,037,000 pixels |
| Display Form Factor | Folding | Folding |
| Display Features | Contrast control, display brightness control, display colour control | Display brightness control, display colour control |
| FLASH | Olympus OM-D E-M1 | 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, wireless off-camera control, flash exposure bracketing | - |
| VIDEOGRAPHY / CAMCORDER | Olympus OM-D E-M1 | Pentax 645Z |
|---|
| Digital Video Format | AVI, MJPEG, H.264, MOV | MJPEG, H.264 |
|---|---|---|
| Image Recording Format | JPEG, RAW, RAW + JPEG, MPO | JPEG, RAW, RAW + JPEG |
| Max Video Resolution | 1920 x 1080 | 1920 x 1080 |
| Microphone Operation Mode | Stereo | - |
| Microphone Features | Wind noise reduction, sensitivity control | - |
| MEMORY | Olympus OM-D E-M1 | Pentax 645Z |
|---|
| Memory Card Slot | SD card | Dual SD card |
|---|---|---|
| Supported Memory Cards | SD Memory Card, SDXC Memory Card, SDHC Memory Card, 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 | RAW 4608 x 3456 - 17 MB JPEG 4608 x 3456 - 7.5 MB JPEG 4608 x 3456 - 3.5 MB JPEG 2560 x 1920 - 1.1 MB |
- |
| Video Capture | MOV - 1920 x 1080 - 30 fps - 24Mbps MOV - 1920 x 1080 - 30 fps - 16Mbps MOV - 1280 x 720 - 30 fps - 12Mbps MOV - 1280 x 720 - 30 fps - 8Mbps MJPEG - 1280 x 720 - 30 fps MJPEG - 640 x 480 - 30 fps |
- |
| BATTERY AND CHARGING | Olympus OM-D E-M1 | Pentax 645Z |
|---|
| Battery Type | Olympus BLN-1 Lithium Ion | Pentax D-Li90 Lithium Ion |
|---|---|---|
| Details | Olympus BLN-1 Li-ion rechargeable battery (included) | Pentax D-Li90 Li-ion rechargeable battery (included) |
| Battery Life | Photo shooting - 250 shots | Photo shooting - 650 shots Playback - 6.67 hours |
| CONNECTIONS | Olympus OM-D E-M1 | Pentax 645Z |
|---|
| Interface | Composite video/audio, HDMI, USB 2.0, Wireless LAN | HDMI, USB 3.0 |
|---|---|---|
| Connectivity Features | Remote control via mobile devices, remote live view | - |
| Print Standard | DPOF support, Exif Print support, PRINT Image Matching | - |
| Flash Terminal | Hot shoe | Hot shoe |
| Connector Type | USB 2.0 Composite video/audio output HDMI output (19 pin micro HDMI Type D) Microphone Accessory port |
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 | Olympus OM-D E-M1 | Pentax 645Z |
|---|
| Self-Timer Delay | 2sec, 12sec | 2sec, 12sec |
|---|---|---|
| Continuous Shooting Speed | 10 frames per second, 6.5 frames per second | 3 frames per second, 4.5 frames per second |
| Additional Features | Audio recording, built-in speaker, RGB primary colour filter, auto power save, sharpness control, histogram display, AE lock, AF lock, cropping an image, resizing an image, saturation control, in-camera red-eye fix, interval shooting mode, face detection, Shadow Adjustment Technology, in-camera RAW processing, Full-time Live View, Intelligent AUTO (iAUTO), Eye-Fi Card Ready, Touch Shutter technology, GPS via mobile | 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 | Olympus OM-D E-M1 | Pentax 645Z |
|---|
| Included Accessories | Battery charger, body cap, shoulder strap, USB cable | Carrying strap, battery charger, body cap, eyecup, shoe cap |
|---|---|---|
| Software | Drivers & Utilities, Olympus Viewer 3 | Drivers & Utilities |
| Max Operating Temperature | 40 °C | - |
| Min Operating Temperature | -10 °C | - |
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