Canon 6D versus T3i

1. A full frame camera has a bigger sensor compared to a crop sensor which results in better image quality and much better performance at high ISOs.

2. Five advantages of 6D over T3i:

• Better image quality
• Lower noise at high ISO
• Much larger sensor
• Better autofocus system.
• Better color depth

3. The 6D only has 11 auto focus points and on cross type points while the 5D MkIII has 41 cross type autofocus points which makes it much easier to focus on any given spot.