Canon 77D Overview
Comprising a versatile feature-set for both still photography and video recording, the EOS 77D DSLR from Canon blends advanced imaging capabilities with an intuitive design. Revolving around a 24.2MP APS-C CMOS sensor and DIGIC 7 image processor, images can be recorded using a broad native sensitivity range of ISO 100-25600, to suit shooting in a variety of lighting conditions, and a continuous shooting rate of 6 fps benefits working with moving subjects. The sensor’s design also facilitates Dual Pixel CMOS AF, which uses phase-detection autofocus for quick, accurate, and smooth performance to suit both video shooting and stills use in live view. Alternatively, a 45-point all cross-type phase-detect AF system is also featured for shooting stills using the optical pentamirror viewfinder.
Canon EF 17-40mm f/4L USM Lens Overview
Spanning a versatile wide-angle range, the EF 17-40mm f/4L USM Lens is a Canon L-series zoom featuring a constant f/4 maximum aperture along with a sophisticated optical design and durable construction. One Super UD element is featured, along with three aspherical elements, which help to reduce both chromatic and spherical aberrations in order to realize high sharpness, clarity, and color accuracy. A Super Spectra coating has also been applied to suppress flare and ghosting for improved contrast in difficult lighting conditions. Complementing the imaging capabilities, this wide-angle zoom also features a ring-type USM and internal focusing mechanism to afford quick, quiet, and accurate autofocus performance, as well as full-time manual focus override. Additionally, this lens is weather-sealed for use in trying environmental conditions.