Side by side comparison and review of Pentax 645Z and Pentax K-3 Mark III. 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 | Pentax 645Z | Pentax K-3 Mark III |
|---|
| Product Type | Digital camera - 1080p - SLR with Live View mode, movie recording | Digital camera - 4K - SLR with Live View mode, movie recording |
|---|---|---|
| Lens Included | Body only | Body only |
| Height | 11.7 cm | 10.35 cm |
| Width | 15.6 cm | 13.45 cm |
| Depth | 12.3 cm | 7.35 cm |
| Weight | 1.47 kg | 735 g |
| Weight Details | Camera body only: 1.47 kg Camera with battery and memory card: 1.55 kg |
Camera body only: 735 g Camera with battery and memory card: 820 g |
| Body Material | - | Magnesium alloy |
| Enclosure Colour | - | Black | Silver |
| Protection | Dust-resistant, water-resistant | Weatherproof, dust-resistant |
| Navigation | - | GPS receiver |
| SENSOR | Pentax 645Z | Pentax K-3 Mark III |
|---|
| Sensor Resolution | 51.4 Megapixel | 25.73 Megapixel |
|---|---|---|
| Optical Sensor Type | CMOS | CMOS |
| Total Pixels | 52,990,000 pixels | 26,780,000 pixels |
| Effective Sensor Resolution | 51,400,000 pixels | 25,730,000 pixels |
| Optical Sensor Size | - | 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) | 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 |
| LENS | Pentax 645Z | Pentax K-3 Mark III |
|---|
| Lens Mounting Type | Pentax 645AF | Pentax K |
|---|
| FOCUSING | Pentax 645Z | Pentax K-3 Mark III |
|---|
| Auto Focus | TTL contrast and phase detection | TTL contrast and phase detection |
|---|---|---|
| Auto Focus Points (Zones) Qty | 27 | 101 |
| AE/AF Control | - | Auto-area AF, Zone AF, Expanded area AF |
| Face Detection | - | Yes |
| VIEWFINDER | Pentax 645Z | Pentax K-3 Mark III |
|---|
| Viewfinder Type | Optical - trapezoid prism | Optical - fixed eye-level pentaprism |
|---|---|---|
| Optical Viewfinder Field Coverage | 98% | 100% |
| Optical Viewfinder Magnification | 0.62x | 1.05x |
| Optical Viewfinder Dioptric Correction Range | -3.5 to +2 | -4 to +1 |
| Field of View Crop Factor | 1.3 | - |
| Features | - | Auto eye sensor |
| EXPOSURE & WHITE BALANCE | Pentax 645Z | Pentax K-3 Mark III |
|---|
| ISO (Max) | 204800 | 1600000 |
|---|---|---|
| Native ISO | 100-204800 | - |
| Light Sensitivity | ISO auto (100-204800), ISO 100-248000 | ISO auto, ISO 100-1600000 |
| Exposure Metering | Multi-segment, centre-weighted, spot | Multi-segment, centre-weighted, spot, highlight-weighted |
| Exposure Modes | Programme, bulb, manual, aperture-priority, shutter-priority, ISO priority, shutter & aperture priority | Programme, bulb, automatic, manual, aperture-priority, shutter-priority, ISO priority, shutter & aperture priority |
| Bracketing Modes | - | Depth of field bracketing, motion bracketing |
| Special Effects | Natural, bright, Vibrant, monochrome, Muted, landscape, portrait, Cross Process, Bleach Bypass, Radiant, Reversal Film | 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 | Tungsten light, Flash, daylight, shade, fluorescent light (cool white), fluorescent light (warm white), fluorescent light (daylight colour), 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 | Electronic | Electronic, mechanical electronically-controlled |
| Max Shutter Speed | 1/4000 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 |
| X-sync Speed | 1/125sec | 1/200sec |
| Exposure Range | EV -1-21 (ISO 200) | EV -3-20 (ISO 100) |
| DISPLAY | Pentax 645Z | Pentax K-3 Mark III |
|---|
| Type | 3.2" LCD display | 3.2" LCD display |
|---|---|---|
| Touch Screen | - | Yes |
| Display Format | 1,037,000 pixels | 1,620,000 pixels |
| Display Form Factor | Folding | Built-in |
| Display Features | Display brightness control, display colour control | Colour control, contrast control, display brightness control, night vision LCD display |
| VIDEOGRAPHY / CAMCORDER | Pentax 645Z | Pentax K-3 Mark III |
|---|
| Digital Video Format | MJPEG, 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 |
| Microphone Operation Mode | - | Stereo |
| Microphone Features | - | Wind noise reduction, sensitivity control |
| MEMORY | Pentax 645Z | Pentax K-3 Mark III |
|---|
| Memory Card Slot | Dual 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, SDHC UHS-II Memory Card, SDXC UHS-II Memory Card |
| Memory Card Included | No | No |
| Image Storage | - | RAW 6192 x 4128 JPEG 6192 x 4128 JPEG 4752 x 3168 JPEG 3648 x 2432 JPEG 1920 x 1280 |
| Video Capture | - | 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 | Pentax 645Z | Pentax K-3 Mark III |
|---|
| Battery Type | Pentax D-Li90 Lithium Ion | Pentax D-Li90 Lithium Ion |
|---|---|---|
| Details | Pentax D-Li90 Li-ion rechargeable battery (included) | Pentax D-Li90 Li-ion rechargeable battery (included) |
| Battery Life | Photo shooting - 650 shots Playback - 6.67 hours |
Photo shooting - 800 shots Playback - 250 minutes |
| CONNECTIONS | Pentax 645Z | Pentax K-3 Mark III |
|---|
| Interface | HDMI, USB 3.0 | HDMI, USB-C, IEEE 802.11b/g/n, Bluetooth 4.2 |
|---|---|---|
| Connectivity Features | - | Remote control via mobile devices, remote live view, Wireless Image Transfer |
| Print Standard | - | Exif Print support |
| Computer Connectivity | - | Mac, Windows |
| Flash Terminal | Hot shoe | Hot shoe, PC terminal |
| Connector Type | 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 |
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 | Pentax 645Z | Pentax K-3 Mark III |
|---|
| Self-Timer Delay | 2sec, 12sec | 2sec, 12sec |
|---|---|---|
| Continuous Shooting Speed | 3 frames per second, 4.5 frames per second | 2.5 frames per second, 12 frames per second, 7 frames per second |
| HDR Mode | - | Auto HDR mode |
| Additional Features | 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 | 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 | Pentax 645Z | Pentax K-3 Mark III |
|---|
| Included Accessories | Carrying strap, battery charger, body cap, eyecup, shoe cap | Eyepiece cover, carrying strap, battery charger, body cap, USB cable, eyecup, shoe cap, sync terminal cover |
|---|---|---|
| Software | Drivers & Utilities | Digital Camera Utility 5 |
| Max Operating Temperature | - | 40 °C |
| Min Operating Temperature | - | -10 °C |
| Service & Support | - | Limited warranty - 1 year |
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