This LS-1 Lens Support Bracket from Kirk is made to be used in conjunction with the LP-61 for the Canon EF 100-400mm f4.5-5.6 IS USM II lens to support the front of the lens. By using the LS-1 lens support, the shift up and down is reduced when loosening the lens collar to rotate the lens. The LS-1 must be used with the Kirk's LP-61, which is sold separately.
