You have selected the Canon EF mount, but it is actually the Canon FD mount (spigot type). It is not compatible with current Canon cameras, so please be aware of this. Thank you for viewing. This is a 90mm single-focus macro lens, and I think it's an easy-to-use lens with a bright F2.8 aperture. ● Optics It's a clear lens in normal light, but when viewed against a very strong light source, mold can be seen in the middle (photos 4 and 5). Also, there is a coating peel-off-like stain on the rearmost lens, and something like balsam separation on the periphery. The included LIFE-SIZE ATTACHMENT for 1:1 shooting has what appears to be bubbles throughout when light is passed through it. In any case, the impact on the depiction is thought to be minor unless used in extreme backlight, etc. ● Function The helicoid, aperture ring, and aperture blades all operate smoothly. There are no problems with the mount attachment operation. ● Appearance There are minor scratches and dirt associated with use. Please check the photos. This is the lens body and the LIFE-SIZE ATTACHMENT for 1:1 shooting. It is listed as a junk item with optical defects. Please consider this after understanding the above. #sunacamera