NEX5:
Effective pixels:14,000,000
Sensitivity: ISO200-12800
AF Sensor: 11
Display scale: 3 inch
Video shoot: 1080p format
Body type: Single Lens electronic viewfinder
Manual operation: Full manual support
Sensor type: APS-C CMOS
Battery Type: FW50 Special lithium battery
Memory card type: SDHC Cards / MS Memory Stick
Flash Type: External
Focusing aids: Parameter correcting focus assist lamp
Support hotshoe: Yes
Data Interface: USB2.0
Pixel and class: 920,000-pixel LCD screen
Lens Description: Sony E series lens mount
NEX3:
Is almost the same camera but with following difference:
Video shoot: 720p format