The Sony Alpha a6600 is a sleek-yet-fully-featured APS-C-format mirrorless camera well-suited for both stills and video. The 4D FOCUS system, which covers 84% of the image frame, utilizes 425 phase-detection points along with 425 contrast-detection areas for especially quick and intuitive performance along with Real-time Eye AF for both photos and video. The compact profile incorporates a high-resolution XGA Tru-Finder 2.36m-dot OLED electronic viewfinder for bright, clear, eye-level viewing, and this EVF features a 120-fps viewing mode for smooth tracking of fast-moving subjects. For video, both headphone and microphone ports have been incorporated, too, for improved audio control. Additionally, for wireless remote control over the camera, or for just sharing imagery online, built-in Wi-Fi with NFC permits linking with a mobile device for intuitive wireless control. The sensor and BIONZ X processor combination also avail a top continuous shooting rate of 11 fps with AF and AE and permits 16-bit recording with 14-bit raw file output for a wider tonal and color scale.

Full HD 1080p recording is also supported in frame rates up to 120 fps, and both resolutions utilize the 100 Mbps XAVC S format contained within an MP4 wrapper with 4:2:0 sampling. In addition to high-resolution internal recording, uncompressed HDMI output also enables the use of an optional external recorder for clean 4K recording with 4:2:2 sampling. This will allow shooters to capture Full HD video at one of either steps between 1-120 fps. These settings will allow you to slow down action as well as speed up a slow-moving scene.

This setting is also NTSC/PAL switchable. An enhanced Zebra function is ideally suited to aid in monitoring exposure values in high-contrast scenes. Video signal level targets can be set from 0 to 109, and specific ranges can be set to make exposure level adjustments easier. Real-time Eye AF can be used to base focus on recognized subjects' eyes for portraits (either humans or animals) and is available for both AF-S and AF-C modes, for stills or video. The apt 4D FOCUS system also lends itself to a variety of focusing functions for refined accuracy, including Lock-on AF, which maintains focus on moving subjects throughout the use of a configurable frame that is set over the desired moving subject and Expand Flexible Spot, which employs neighboring focus points to retain focus on moving subjects even if the originally selected point loses focus. This allows users to confidently use any lens, even adapted lenses, for critical imaging without encountering blur from camera shake. All 5 axes of stabilization will function at all times, even when used with third-party lenses and adapters or lenses with built-in optical stabilization.

A 3.0" 921.6k-dot LCD touchscreen can be tilted 180° upward or 74° downward to suit working from high and low angles. The screen also incorporates White Magic technology with an RGBW pixel structure for increased brightness to support use in daylight conditions. The included NP-FZ100 rechargeable lithium-ion is rated for approximately 810 shots per charge when working with the LCD screen. An ergonomic grip structure is ideal for long shooting sessions and facilitates easy access to the main control buttons and dials.

The E 18-135mm f/3.5-5.6 OSS from Sony is a versatile 27-202.5mm equivalent zoom for APS-C-format E-mount mirrorless cameras. Complementing the range of focal lengths is an Optical SteadyShot image stabilization system, which minimizes the appearance of a camera shake for sharper handheld shooting. Also helping to produce sharper imagery is a linear autofocus motor, which delivers quick and accurate focusing performance that is also quiet to suit video recording applications. Versatile zoom designed for APS-C-format E-mount mirrorless cameras, this 18-135mm lens provides a 27-202.5mm equivalent focal length range. One aspherical element helps to control distortion and reduce spherical aberrations for greater sharpness and accurate rendering. This stabilization system can also be combined with a select camera's sensor-shift type image stabilization for more effective control of camera blur. A linear autofocus motor provides quick and precise autofocus performance and enables accurate and silent focusing while recording videos. Additionally, a dedicated AF/MF switch allows for quick changes between focusing methods.