Canon EF-S10-18 Lens To EF Lens Mount Adapter
Compatible: Canon EF-S 10-18mm IS STM f/4.5-5.6 lens
Material: Aluminum Alloy
Package: 1x EF lens mount with 4x screws
1) This lens mount is for EF-S 10-18mm lens to EF mount modification. Please note that the EF-S mount lens is design for APS size camera, the image circle is smaller then 135mm full frame (24x36mm) camera. So we are not recommend to use the EF-S lens to shoot photos on a full frame camera, because it will result dark corner but it's good for shooting videos at 16:9 mode by using a full frame camera.
2) You can still use the modified EF mount lens on an APS size camera, nothing changed. You just change from a plastic mount to a metal mount, more durable.