The Canon XF305 has a better image stabiliser type than most small sensor size video cameras that have been available for around the same time as it. This Canon video camera has an Optical image stabiliser, whereas most similar spec camcorders that have been available for a comparable time to it have a Hybrid image stabiliser. Optical image stabilisation is hardware based. Digital cameras with optical IS typically have a built-in gyro sensor and microprocessor that detects camera shake as it occurs. The stabiliser compensates for any camera movement.
This camcorder's image stabiliser type (Optical) is in fact the best image stabiliser type across all comparable spec video cameras that have been around for around the same time as the XF305.
The worst image stabiliser type amongst comparable types of camcorder is Hybrid.