| Pentax K-r | Pentax K-x | | Score | | Weight | | | | Score | | Weight | | DXO Mark Scores | | | Low light performance | | 755 ISO | 35.0 | × | 100.0 | = | 35.0 | 811 ISO | 40.0 | × | 100.0 | = | 40.0 | Color depth | | 22.9 bits | 85.0 | × | 25.0 | = | 21.3 | 22.8 bits | 85.0 | × | 25.0 | = | 21.3 | Dynamic range | | 12.4 EV | 85.0 | × | 25.0 | = | 21.3 | 12.5 EV | 85.0 | × | 25.0 | = | 21.3 | | Misc | | | Cross type focus points | | 9 | 35.0 | × | 37.5 | = | 13.1 | 9 | 35.0 | × | 37.5 | = | 13.1 | Shutter lag | | 105 ms | 95.0 | × | 37.5 | = | 35.6 | 97 ms | 95.0 | × | 37.5 | = | 35.6 | Viewfinder size | | 0.56x | 35.0 | × | 37.5 | = | 13.1 | 0.56x | 35.0 | × | 37.5 | = | 13.1 | Popularity | | 6 | 5.0 | × | 20.0 | = | 1.0 | 5 | 5.0 | × | 20.0 | = | 1.0 | | Screen | | | Screen resolution | | 920k dots | 75.0 | × | 25.0 | = | 18.8 | 230k dots | 15.0 | × | 25.0 | = | 3.8 | Screen size | | 3" | 90.0 | × | 25.0 | = | 22.5 | 2.7" | 65.0 | × | 25.0 | = | 16.2 | Touch screen | | No | 0.0 | × | 12.5 | = | 0.0 | No | 0.0 | × | 12.5 | = | 0.0 | | Advanced | | | Image stabilization | | - Sensor shift
| 80.0 | × | 25.0 | = | 20.0 | - Sensor shift
| 80.0 | × | 25.0 | = | 20.0 | Continuous shooting | | 6 fps | 50.0 | × | 12.5 | = | 6.2 | 4.7 fps | 35.0 | × | 12.5 | = | 4.4 | | Form factor | | | Viewfinder | | Pentamirror | 90.0 | × | 25.0 | = | 22.5 | Pentamirror | 90.0 | × | 25.0 | = | 22.5 | Lens availability | | 113 lenses | 45.0 | × | 5.0 | = | 2.2 | 113 lenses | 45.0 | × | 5.0 | = | 2.2 | | Movies | | | Movie format | | 720p @ 25fps | 45.0 | × | 25.0 | = | 11.2 | 720p @ 24fps | 45.0 | × | 25.0 | = | 11.2 | | | Total | | 243.9 | Total | | 225.7 | | Best total | | 243.9 | Best total | | 243.9 | | Pentax K-r Score | | 100 | Pentax K-x Score | | 92 | | |