ColorRight BASICS- Super Gray Card- PostRight- Quick Release Lanyard- White Balance Card for Post Production Work or In-Camera, Canon, Nikon, Sony, Pentax, Olympus, Minolta- Works with ANY Camera or Video Camera for Post and almost ANY camera for in-camera wb ColorRight Super Gray Card may be used for Post-Production, in Studio, or Directly in Camera using solid Neutral White Reverse Side For setting your white balance in camera, video camera or post production workflow Super Gray Card specializes in getting excellent skin tones and amazing neutrality Made of High Grade Metal; practically unbreakable. 3.25" in Diammeter. Includes Lanyard. Reverse white side for Ultra Neutral Rendering. Quick Release Lanyard Included.