Developed specifically for those looking to photograph the night sky, the Canon EOS Ra is a modified version of the original EOS R that incorporates an optical IR cut filter in front of the sensor for photographing distant nebulae and other astronomical phenomena with utmost clarity. By updating the EOS R's design with a dedicated filter, the EOS Ra provides approximately 4x improved transmission and sensitivity to H-alpha (656.28nm) wavelengths for depicting nebulae and other subjects without unwanted infrared contamination for greater color neutrality. Additionally, a 30x live view magnification setting has also been added for improved focusing precision on distant subjects when working with either the EVF or rear LCD. Beyond these couple distinctions, the EOS Ra and EOS R feature the same set of core features to produce high resolution, well-detailed imagery.

The EOS Ra features a high-resolution 30.3MP full-frame CMOS sensor along with a DIGIC 8 image processor. The combination of these technologies offers a wide sensitivity range up to a native ISO 40000, fast continuous shooting to 8 fps, and UHD 4K30 video recording. In addition to imaging, the sensor also facilitates an advanced Dual Pixel CMOS AF system, which uses 5655 selectable points for quickly and accurately acquiring focus. This focusing system is also sensitive down to EV -6 for working in impressively dark conditions. The AF system is also perfectly matched to the UHD 4K video recording capabilities, which are also rounded out by Movie Digital IS to minimize camera shake, built-in Canon Log gamma for a greater dynamic range, and 4K 10-bit 4:2:2 output over HDMI for even greater color control.

Beyond the performance attributes, this camera has been designed from the ground up and features a high-resolution 3.69m-dot OLED electronic viewfinder for clear and bright eye-level viewing. Conversely, a rear 3.15" 2.1m-dot LCD touchscreen is also featured and has a swivel design to suit working from high and low angles. Also catering to the tactile cravings is a Multi-Function bar, which is customizable for intuitively adjusting shooting settings. And as a camera built to withstand the toughest environments, the magnesium alloy body is dust and moisture-sealed.