Compared toThe best recent entry-level DSLRs

Rank Out of Score
Nikon D5100 #9 13 71
Sony SLT-A55 #13 13 74
Nikon D5100 Sony SLT-A55
Score Score
DXO Mark Scores
Low light performance 75.0 40.0
Color depth 23.7 21.3
Dynamic range 22.5 21.3
Misc
Cross type focus points 0.0 3.8
Shutter lag 13.1 20.6
Viewfinder size 7.5 37.5
Popularity 7.0 1.0
Screen
Screen resolution 18.8 18.8
Screen size 22.5 22.5
Touch screen 0.0 0.0
Advanced
Image stabilization 0.0 20.0
Continuous shooting 3.8 10.6
Form factor
Viewfinder 22.5 15.0
Lens availability 5.0 2.8
Movies
Movie format 25.0 25.0
Total 246.4 260.0
Best total 346.8 346.8
Score 71 74
Nikon D5100 Sony SLT-A55
Score Weight Score Weight
DXO Mark Scores
Low light performance
Help
1,183 ISO 75.0 x 100.0 = 75.0 816 ISO 40.0 x 100.0 = 40.0
Color depth
Help
23.5 bits 95.0 x 25.0 = 23.7 23 bits 85.0 x 25.0 = 21.3
Dynamic range
Help
13 EV 90.0 x 25.0 = 22.5 12.4 EV 85.0 x 25.0 = 21.3
Misc
Cross type focus points
Help
1 0.0 x 37.5 = 0.0 3 10.0 x 37.5 = 3.8
Shutter lag
Help
273 ms 35.0 x 37.5 = 13.1 220 ms 55.0 x 37.5 = 20.6
Viewfinder size
Help
0.51x 20.0 x 37.5 = 7.5 0.72x 100.0 x 37.5 = 37.5
Popularity
Help
21,917,143 35.0 x 20.0 = 7.0 1,225,656 5.0 x 20.0 = 1.0
Screen
Screen resolution
Help
920k dots 75.0 x 25.0 = 18.8 921k dots 75.0 x 25.0 = 18.8
Screen size
Help
3.0" 90.0 x 25.0 = 22.5 3.0" 90.0 x 25.0 = 22.5
Touch screen
Help
No 0.0 x 12.5 = 0.0 No 0.0 x 12.5 = 0.0
Advanced
Image stabilization
Help
None 0.0 x 25.0 = 0.0 Sensor shift 80.0 x 25.0 = 20.0
Continuous shooting
Help
4 fps 30.0 x 12.5 = 3.8 10 fps 85.0 x 12.5 = 10.6
Form factor
Viewfinder
Help
Pentamirror 90.0 x 25.0 = 22.5 Digital 60.0 x 25.0 = 15.0
Lens availability
Help
205 lenses 100.0 x 5.0 = 5.0 123 lenses 55.0 x 5.0 = 2.8
Movies
Movie format
Help
1080p @ 30fps 100.0 x 25.0 = 25.0 1080p @ 30fps 100.0 x 25.0 = 25.0
Total 246.4 Total 260.0
Best total 346.8 Best total 346.8
Nikon D5100 Score 71 Sony SLT-A55 Score 74