The A77II is a SLT technology based camera on the other side the A6000 is a mirrorless camera, the A6000 have PDAF sensor on the other hand as usual uses the fixed mirror technology inside the camera and the A77 II looses 20-30% if the incoming light to the sensor (20-30% light goes to AF sensor of the camera below the image sensor).
Sony a77II vs. Sony A6000 Specification Comparison Table.
Image stabilization: Sony a77II features in body sensor Built-In system on the other hand no IS available in Sony A6000.
More AF Points: Sony A6000 Fast Hybrid AF system uses a total of 25+179 Phase Detection points, 15 cross-type, but of we look at Sony a77II it is limited to 79 only, so finally we have no doubt that Sony a77II will do more quick and precise AF than Sony a77II.
Better Shutter Range: Sony a77II features better shutter range of 30 – 1/8000 in order to clearly record and freeze even the fastest movements into an ultra-sharp image. Fast shutter range will help you to capture amazing action shots; on the other hand Sony A6000 shutter range is limited to 30- 1/4000 only.
Top Continuous shooting speed: Sony a77II features fast shooting speed (12fps vs. 11fps) compared to Sony A6000.
Sony A77 Video Mode: Sony a77II features full HD video recording @ 60 and 34 fps frame rate.
Supported formats Sony a77II Full HD videos are recorded using the high-quality AVCHD codec, supported in the Internet-friendly MP4 format.
Sony A6000 Video Mode: Sony A6000 features full HD video recording @ 60fps frame rate.
Supported formats: Sony A6000 Full HD videos are recorded using the high-quality AVCHD codec additionally; a Zebra function is available, in 70 to 100+ levels, during recording for easier detection of exposure clipping to prevent overexposure.
Sony a77II features 3″ Rear Screen Swivel LCD (1,228,800) (screen dots) on the other hand Sony A6000 have 3″ Widescreen Tilting LCD (921,600), so we get more flexibility while composing our shot with Sony a77II.
Wireless: Both camera have built-in WiFi and NFC connectivity.
Battery Life (CIPA): Sony a77II battery rating is 480 shots and other hand Sony A6000 battery rating is 420 shots. According to CIPA.
Dimensions: Sony A6000 is smaller than Sony a77II.
Weight: Sony A6000 light-weight than Sony a77II.
High ISO Test Between Sony a77II vs. Sony A6000
Verdict: The AF System of Sony A6000 is more advance compared to the Sony A77 II camera, on the other hand the size and weight (price too) is more user friendly compared to A77 II, yes there are bit minor difference but I personally recommend you to buy Sony A6000 mirrirless camera.