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In our lab we successfully calibrated two different kinds of Bumblebee2 stereo cameras (2.5 and 3.8 mm focal length) with the ROS stereo calibration tool. We used the -k 6 option to allow for more parameters in the distortion model. We run the camera1394stereo driver for the camera and stereo_image_proc to generate rectified images and point clouds. Regarding the parameters for stereo_image_proc we followed this tutorial. We had to increase the disparity_range to 128. The point clouds look quite nice (see the video on the viso2_ros wiki page).

Hope that helps!