NEX-3 features (full specification here)
- 14.2 megapixels Exmor APS HD CMOS sensor
- MPEG4 720p video shooting
- Sweep Panorama
- 7.5cm/3″ tilt-angle TruBlack LCD
NEX-3 advantages over EPL-1:
- Small size
- Larger format sensor
- Control dials (as opposed to buttons)
- Much better LCD screen (921k dots)
- Screen can be tilted up to 80 degrees and 45 degrees downwards
- Faster continuous shooting (albeit with focus locked)
- Greater resolution sensor, higher maximum ISO (12,800)
NEX-3 advantages over NX10:
- Smaller size
- Tilting screen
- Faster continuous shooting (albeit with focus locked)
- Dedicated video recording button
- Provision for external microphone (via accessory socket)
- Higher maximum ISO setting
EPL-1 advantages over NEX-3:
- Built-in flash
- Flash hot shoe
- Optional EVF
- Plenty of buttons for key settings
- More conventional user interface
- Lots of customization options
- In-camera raw conversion
- Better legacy lens support (no loss of AF with Four Thirds adapter)
NX10 advantages over NEX-3:
- Built-in EVF
- Flash hot shoe
- More conventional user interface
- Greater customization
- More direct-access buttons (including ISO and white balance)
NEX-5 features (full specification here)
- 14.2 megapixels Exmor APS HD CMOS sensor
- AVCHD Full HD 1920x1080i video shooting
- Sweep Panorama
- 7.5cm/3″ tilt-angle TruBlack LCD
- Magnesium body
NEX-5 advantages over GF1:
- Smaller size
- Larger sensor
- 1080i AVCHD video recording
- Higher resolution LCD screen (921k dots)
- Screen can be tilted up to 80 degrees
- Faster continuous shooting (albeit with focus locked)
- Greater resolution sensor, higher maximum ISO (12,800)
NEX-5 advantages over NX10:
- Smaller size
- Tilting screen
- Faster continuous shooting (albeit with focus locked)
- Dedicated video recording button
- Provision for external microphone (via accessory socket)
- Higher maximum ISO setting
GF1 advantages over NEX-5:
- Built-in flash
- Flash hot shoe
- Optional EVF
- Large degree of direct external control
- More conventional user interface
NX10 advantages over NEX-5:
- Built-in EVF
- Flash hot shoe
- Bright, high-contrast OLED screen
- More conventional user interface
- More direct-access buttons (including ISO and white balance)
Full preview here at DP Review