The invention provides an image stabilization apparatus, an image capturing system and a method for controlling the same. The image stabilization apparatus includes a shake detector configured to detect an image blur, a generation unit configured to generate a first shake correction signal and a second shake correction signal based on a shake signal corresponding to a detection result from the shake detector, the generation unit extracting a low-frequency band signal from the shake signal, changing an amplitude of the extracted low-frequency band signal to generate the first shake correction signal, and generating the second shake correction signal based on the change in the amplitude and the shake signal, a first shake correction unit configured to correct the image blur based on the first shake correction signal, and a transmission unit configured to transmit the second shake correction signal to a second image stabilization apparatus.