Both a 24.2MP APS-C CMOS sensor and DIGIC 7 image processor are used to deliver high sensitivity and fast camera performance to suit both stills and video applications. A flexible native ISO 100-25600 range, which can be extended to ISO 51200, suits working in a variety of lighting conditions, and the processing capabilities minimize noise for notable clarity. The processor also contributes to a fast 6 fps continuous shooting rate for photographing fast-moving subjects.

Benefitting stills shooting with the optical viewfinder, a wide-area 45-point all cross-type phase-detection autofocus system provides quick and precise focusing in difficult lighting conditions. The cross-type design of the sensors affords greater accuracy in low-contrast and mixed lighting conditions, and the broad coverage of the 45 sensors is ideal for tracking and maintaining focus on moving subjects.

When recording video or shooting in live view, a Dual Pixel CMOS AF system is employed that offers smooth and fast focusing performance in a similar manner to how a camcorder acquires focus. This system integrates two separate photodiodes within each pixel to provide a broad and dense network of phase-detection gathering elements across a majority of the image sensor to reduce focus hunting for faster, more direct control of focus placement. When working with still imagery, this focusing system works to acquire focus quickly and accurately, making it ideally suited to shooting and tracking moving subjects so that critical focus is attained with each shot. When shooting video, a Movie Servo AF mode offers smooth and natural focusing when changing from different subjects or different distances within the scene, as well as the ability to specify tracking sensitivity, AF speed, and Face Tracking priority. Benefited by the Touch AF system, rack focus is possible simply by touching elements within the scene on the touchscreen in order to change focus in an intuitive manner. Subject tracking in movies is also heightened due to the Dual Pixel CMOS AF system's ability to recognize subjects and maintain focus when working within changing or cluttered scenery.

In addition to stills recording, the 77D also supports Full HD 1080p video recording at up to 60 fps in the MP4 format with IPB compression, or 30 fps in the MOV format with ALL-I compression when making in-camera time-lapse movies. Video recording is benefitted by the inclusion of Dual Pixel CMOS AF and the Movie Servo AF focusing functions, as well as the touchscreen design of the LCD monitor for intuitive control. Movie Electronic IS is also featured to minimize the appearance of camera shake across five axes for smoother, steadier recording when shooting handheld. Additionally, an external microphone jack is incorporated in the body design for greater control over your recorded sound.

Unique to most video recording systems, the 77D also features an HDR Movie mode that can be used to achieve greater highlight and shadow detail when recording in high contrast scenarios. This mode captures two HD frames at different exposures, one normal and one underexposed, in short succession at up to 60 fps and then composites them during playback at 30 fps to create a movie with a longer-appearing dynamic range.

Included with the camera body is the EF-S 18-55mm f/4-5.6 IS STM lens, which provides a 28.8-88mm equivalent focal length range that covers a variety of perspectives from wide-angle to portrait-length. Its design integrates an STM focusing mechanism that provides near-silent focusing abilities with smooth and precise control. Additionally, the Optical Image Stabilizer system helps to minimize the appearance of camera shake by up to four shutter speed steps in order to benefit working in low-light conditions and with greater zoom magnifications.

Resolution: Actual: 25.8 Megapixel / Effective: 24.2 Megapixel

Zoom: Versatile 18-155mm zoom range / Excellent image quality

ISO: Auto, 100-25600 (Extended Mode: 100-51200)

Flash: Yes

Display: 3" Rear Touchscreen Swivel LCD (1,040,000)

Shooting Modes: Continues: Up to 6 fps at 24.2 MP for up to 190 frames in JPEG format / Up to 6 fps at 24.2 MP for up to 21 frames in raw format / Up to 3 fps at 24.2 MP for up to 190 frames in JPEG format / Up to 3 fps at 24.2 MP for up to 21 frames in raw format

Image Type: JPEG, RAW

Movie Type: H.264, MP4

Movie Resolution: Full HD

Movie Length: 1920 x 1080: 29 Minutes, 59 Seconds

Self-timer: Yes / 10 Seconds, 2 Seconds

GPS: No

Connectivity: 1/8" Microphone, HDMI C (Mini), Mini-USB, USB 2.0

Memory Card Type: SD, SDHC, SDXC

Battery: 1 x LP-E17 Rechargeable Lithium-Ion Battery Pack, 7.2 VDC, 1040 mAh

Battery Life: Approx. 600 shots