This Sigma FHR-11 Rear Gel Filter Holder is designed to allow for the convenient use of a pre-cut polyester or polycarbonate gel filter with a Sigma 14mm f/1.8 DG HSM Art Lens for Canon EF or a Sigma 14-24mm f/2.8 DG HSM Art lens for Canon EF without vignetting.
Use of the filter holder is easily accomplished by first unscrewing the shim that is pre-installed over the mount of a Sigma 14mm f/1.8 DG HSM Art Lens for Canon EF or a Sigma 14-24mm f/2.8 DG HSM Art lens for Canon EF. The filter holder can then replace the shim using its three included mounting screws.
When positioned over a compatible lens's Canon EF mount, this Sigma FHR-11 Rear Gel Filter Holder does not interfere with the lens's electrical contacts intended for digital communication with a camera. A gel filter that is pre-cut using the provided tracing and cutting template can then be inserted into the filter holder's integrated slot.
