A77
24.3 MP Exmor HD CMOS sensor
19 points AF sensor with 11 cross sensors
ISO 100-16000, with expandeable ISO 50 option
1920 x 1080 60p/24p AVCHD 2.0
P/A/S/M manual controls while recording video
1200 zone metering
Completely new developed Bionz processor
12 fps
1/8000 shutter speed
TrueBlack 921k 3-way tilt LCD
3 million dot OLED viewfinder
Smart teleconverter function with 1.4x and 2.0x option
Built-in flash
Built-in GPS
Battery life with over over 500 shots
Magnesium alloy body
Dust and Moisture proof
Multi Frame NR
SD card (no CF!)

A65 (differences with the A77)
A77 has 19 point AF system with 11 cross sensors while the A65 has only 3 cross sensors.
A77 can do 12 fps while the A65 can do 10fps.
A77 has new 3 way tilting LCD, A65 has “classic” tilting LCD
A77 can do 50 ISO while A65 can not.
The A77 has a magnesium body while the A65 has not.
The A77 has 1/8000 shutter while A65 has a 1/4000 shutter
The A77 has a top LCD screen while the A65 has it not.
The A77 is Dust and Moisture proof while the A65 is not

NEX-7
24,3 Exmor HD sensor
100-16.000 ISO
1200 zone metering
1920×1080 60p/60i/24p AVCHD 2.0 (28Mbit/s) video recording
3 million dot XGA OLED viewfinder
3inch 921k TruBlack LCD display (touchscreen)
10 fps
20ms startup time
Built-in flash
New universal hot shoe
Battery life for over 400 shots
Magnesium alloy body

NEX-5N
16.1 MP Exmor sensor (Same us Sony NEX-C3)
ISO 100-25600
1920×1080 60p/60i/24p AVCHD 2.0 video recording
Shutter 1/4000
10 fps
Can take over 430 shots with one battery
Same AF speed as the GH2

VG-20
16 MPX Exmor sensor
1920×1080 60p/60i/24p AVCHD 2.0 video recording
Can record stills in RAW
3 inch touchscreen (swifel)
audio level control
IR AVR remote