This feature rich flash bracket is a must for event photographers. It easily rotates your camera from horizontal to vertical using roller bearings. The retractable upright allows you to adjust your flash height and tilt to elimate red eye and shadows. Note: Not recommended for use with Canon Speedlite Transmitter ST-E2, or Metz 54, 70, and 76 (Grip on bracket will block the infrared signal). Instead use the Digital PRO with these products. Required Items (sold separately): Camera mounting plate (CPM or C35 series), flash mounting plate, and QR Tripod quick release (if you desire to mount it to a tripod).