LCD and Viewfinder
Canon 5D has a Fixed Type 2.5" LCD screen with a resolution of 230k dots. At only 2.5", the screen is on the smaller side and 230kdot resolution is lower than most of the recent models in this class.
5D has a built-in Optical (pentaprism) viewfinder. The viewfinder has a coverage of 96% and a magnification ratio of 0.71x. 96% coverage means that what you see in your viewfinder while shooting will slightly be different from the actual image.
Max Shutter speed
Canon 5D can shoot continuously at max speed of 3 fps
and has max shutter speed of 1/8000 sec
Unfortunately 5D doesn't have a built-in flash but it has a flash shoe for mounting external flashes.
Canon 5D features a Phase Detection autofocusing system. The AF system has 9 points to choose from.
Unfortunately Canon 5D doesn't have Video recording ability.
Connectivity and Storage
Canon 5D has a USB 2.0 (480 Mbit/sec) port to connect your camera to other devices.
Canon 5D is powered by battery which provides a shooting life of 800 according to CIPA standards.
Considering that the average battery life of DSLR type cameras is 943 shots, Canon 5D has a short battery life for its class so we strongly recommend 5D owners to buy some extra batteries.
Battery Life Comparison in Semi-Pro DSLR Cameras
Nikon D780 with its 2260shots is the model with longest battery life among Semi-Pro DSLR cameras. Check the comparison of Canon 5D vs Nikon D780 or take a look at Longest Battery Life DSLR cameras list.
Canon 5D Features Compared to Main Competitors
You can download Canon 5D's User Manual here