Pentax 645D vs Pentax K-3
Compare key differences and full specifications to find the camera that suits your photography.
Key differences
- Year: Pentax 645D: 2010 ; Pentax K-3: 2013
- Weight: Pentax 645D: 1400 g ; Pentax K-3: 800 g
- Sensor size: Pentax 645D: 44 x 33 mm ; Pentax K-3: 23.5 x 15.6 mm
- Sensor resolution: Pentax 645D: 7294 x 5484 ; Pentax K-3: 6064 x 4016
- Effective megapixels: Pentax 645D: 40.0 ; Pentax K-3: 24.35
- Battery: Pentax 645D: Lithium-Ion D-LI90 rechargeable battery ; Pentax K-3: Rechargeable Lithium-ion Battery D-LI90
Best for
Larger prints and more cropping detail: Pentax 645D (40.0).
| Specification | Pentax 645D | Pentax K-3 |
|---|---|---|
| General | ||
| Model | 645D | K-3 |
| Year | 2010 | 2013 |
| Body | ||
| Dimensions | 156 x 117 x 119 mm | 131.5 x 100 x 77.5 mm |
| Weight | 1400 g | 800 g |
| Sensor | ||
| Sensor type | CCD | CMOS |
| Sensor size | 44 x 33 mm | 23.5 x 15.6 mm |
| Sensor resolution | 7294 x 5484 | 6064 x 4016 |
| Crop factor | 0.79 | 1.53 |
| Total megapixels | 40.1 | 24.71 |
| Effective megapixels | 40.0 | 24.35 |
| Image | ||
| Max. image resolution | 7264 x 5440 | 6016 x 4000 |
| ISO | Auto, 200 - 1600 | Auto, 100 - 51200 |
| Exposure & Shutter | ||
| Max. shutter speed | 1/4000 sec | 1/8000 sec |
| Metering | Centre weighted, Multi-segment, Spot | Multi, Center-weighted, Spot |
| Exposure compensation | ±5 EV (in 1/3 EV, 1/2 EV, 1 EV steps) | ±5 EV (in 1/3 EV, 1/2 EV steps) |
| White balance presets | 8.0 | 9.0 |
| Display & Viewfinder | ||
| Screen size | 3" | 3.2" |
| Screen resolution | 921,000 dots | 1,037,000 dots |
| Storage & Connectivity | ||
| Storage types | SDHC, Secure Digital | Dual SD/SDHC/SDXC |
| USB | USB 2.0 (480 Mbit/sec) | USB 3.0 (5 GBit/sec) |
| Power | ||
| Battery | Lithium-Ion D-LI90 rechargeable battery | Rechargeable Lithium-ion Battery D-LI90 |