The Canon Tripod Mount Ring C (WII) is shown above mounted to Canon EF 70-300mm f/4-5.6 L IS USM Lens, which is mounted to a Canon EOS-1Ds Mark III.
You can mount this camera and the 70-300 L lens to a tripod without the tripod ring (the camera body tripod insert can be used), but the setup is very noticeably front heavy. The centrally-positioned Canon Tripod Mount Ring C (WII) provides a much better tripod balance - and results in much less movement after the tripod head is tightened.
Better-balance is not the only advantage. Since the tripod ring freely rotates, a nice amount of tripod setup flexibility is gained. With the Canon Tripod Mount Ring C (WII) in use, switching from horizontal to vertical orientation is fast and easy. Otherwise, a major tripod head adjustment is required (such as dropping a ball head into the drop-notch). Correcting camera level is also done easily using the tripod collar.
About this item
The third party special design, perfect conformity in color and surface qualities.
Ring inner diameter: 81.5mm, Ring width: 18mm, Ring thickness: 4.5-8mm, Color: White
Made by metal with very high quality
Suitable for Canon EF 70-300mm f/4-5.6L IS USM.
The UNC (Unified National Coarse Thread) is 1/4" and 3/8".