LCD and Viewfinder
Sony A100 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.
A100 has a built-in Optical (pentamirror) viewfinder. The viewfinder has a coverage of 95% and a magnification ratio of 0.55x. 95% coverage means that what you see in your viewfinder while shooting will slightly be different from the actual image.
Max Shutter speed
Sony A100 can shoot continuously at max speed of 3 fps and has max shutter speed of 1/4000 sec.
A100 has a built-in flash, and it also has a flash shoe to mount your external flashes too.
Sony A100 features a Phase Detection autofocusing system. The AF system has 9 points to choose from.
Unfortunately Sony A100 doesn't have Video recording ability.
Connectivity and Storage
Sony A100 has a USB 2.0 (480 Mbit/sec) port to connect your camera to other devices.
Sony A100 Features Compared to Main Competitors
Current Lowest price for Sony A100 is $999.95