This Canon EOS lens adapter is designed to attach to the camera with the filter wheel installed. The standard filter wheel for the STF Series is the FW8-8300 (also compatible with obsolete FW5-8300). The standard filter wheel for the STT Series is the FW8S-STT. Note: This adapter cannot be used with the self-guiding FW8G-STT filter wheel.
The Filter Wheel Spacer , also available separately, can be used in place of the filter wheel to maintain the correct distance for achieving infinity focus on cameras without filter wheels.