"Light" version compared to the 405. This head perfectly fulfilled its role for macro photography studio. Once placed on a strong, stable tripod, it allows fluids and fine movement (see very thin) individually in the 3 directions. A pleasure to aim with this machine. Also my previous ball had hit me dropping my EOS 5D malgrès a tight screw. No problem with this ball. Once the device is installed, no movement can take place freely without a calculated effort on the handles. Immediately laché, the axis is locked and can not move with the fluid micrometric knobs. Again, a pleasure for MACRO. (NOT SUITABLE FOR REQUIRING PHOTOS POSITIONING WITH QUICK SET)