LCD and Viewfinder
Sigma SD9 has a Fixed Type 1.8″ LCD screen with a resolution of 130k dots. At only 1.8″, the screen is on the smaller side and 130kdot resolution is lower than most of the recent models in this class.
SD9 has a built-in Optical (pentaprism) viewfinder. The viewfinder has a coverage of 98% and a magnification ratio of 0.77x. 98% coverage means that what you see in your viewfinder while shooting will slightly be different from the actual image.
Max Shutter speed
Sigma SD9 can shoot continuously at max speed of and has max shutter speed of 1/6000 sec.
Unfortunately SD9 doesn't have a built-in flash but it has a flash shoe for mounting external flashes.
Sigma SD9 features a Contrast Detection autofocusing system.
Unfortunately Sigma SD9 doesn't have Video recording ability.
Connectivity and Storage
Sigma SD9 has a USB 1.0 (1.5 Mbit/sec) port to connect your camera to other devices.
Sigma SD9 Features Compared to Main Competitors
Current Lowest price for Sigma SD9 is $3,000.99