- Medium format 1,452.0mm2
- 40.0 megapixels
- ISO 200 - 1000
- Go in depth with our full Pentax 645D Review.
- See real-world photos taken with the 645D.
- APS-C 368.2mm2
- 16.2 megapixels
- ISO 100 - 6400
- Go in depth with our full Nikon D5100 Review.
- See real-world photos taken with the D5100.
- Succeeded by the Pentax 645Z
- Compare 645D vs 645Z
- Succeeded by the Nikon D5200
- Compare D5100 vs D5200
- Compare PENTAX 645Z vs NIKON D5200