The a77II features a 24.3MP APS-C-sized Exmor CMOS sensor and BIONZ X image processor to enable up to 12 fps shooting and full HD movie recording with marked low-light quality and sensitivity to ISO 25600. The processor and sensor combination are also significantly benefitted by the unique Translucent Mirror Technology, which effectively directs light to both the image sensor and focus sensor simultaneously, to enable the 79-point AF system, with 15 cross-type points, to work continuously even while recording video and photographing in a continuous shooting mode.
For image monitoring, playback, and menu navigation, both a large rear monitor and detailed electronic viewfinder are available. The 3.0" 1,228k-dot LCD screen features a three-way tilting design to facilitate easier use from both high and low angles while the 0.5" 2.359k-dot Tru-Finder OLED EVF offers 100% frame coverage and a refined optical design to provide a natural viewing perspective and magnification. Additionally, built-in Wi-Fi connectivity, with support for NFC-enabled devices, is also integrated into the a77II to support remote camera control and image sharing to linked mobile devices.
Bundled with the camera is the DT 18-135mm f/3.5-5.6 SAM lens, which provides a 35mm-equivalent focal length range of 27-202.5mm. Two aspherical elements and one extra-low dispersion element contribute to reduced distortions and increased sharpness throughout the zoom range while an internal focusing design and Smooth Autofocus Motor (SAM) deliver quick, quiet, and precise autofocus performance.