Ultra-high-speed predictive AF up to 7 fps with optional Power Drive Booster
7fps, The Fastest in Its Class
When attached to the EOS-3, the Power Drive Booster PB-E2 activates a 3-motor drive system which greatly boosts camera performance. This drive system includes an extra, high-power actuator dedicated to prime the shutter and mirror. For maximum performance, Ni-MH Pack NP-E2 is highly recommended.
When this high-capacity rechargable battery pack is installed in the Booster, the camera automaticallyy switches to a special high-speed gear train and high-speed exposure sequence. These features, in conjunction with the camera's high-speed 32-bit microprocessor, achieve a maximum shooting speed of up to 7fps in all focusing modes including Al-Servo AF.