Canon Dots

 The colored dots on your Canon lenses correspond to different types of lens mounts and alignment markers:


1. **Red Dot**: This indicates that the lens is compatible with Canon's EF (Electro-Focus) mount. These lenses can be used on both full-frame and APS-C sensor cameras. The red dot is used for aligning the lens with the camera body when attaching it.


2. **White Dot**: This is found on lenses with the EF-S (Electro-Focus Short Back Focus) mount, which are specifically designed for Canon's APS-C sensor cameras. The white dot is also used to align the lens with the camera body.


The distinction helps ensure that you’re using the correct lens type for your camera.

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