This is a CANON EF 100-300mm f/5.6L. Lens Condition: AF and aperture are working, and it is possible to take pictures. Cloudiness can be seen when a strong light is shone into the lens. Actual photos have been taken. Under strong light (backlight), the contrast is reduced, possibly due to the cloudiness. However, there is no difference in the images taken under the same light conditions with a lens without cloudiness, so it may be due to the coating of the time, and this is how it appears under strong light. Please check the actual photos in photos 5 and 6 (taken with Kiss Digital X at f/8). Lens Introduction: This is an early EF lens, and it uses the optics of the famous FD 100-300mm f/5.6L. It is a luxurious construction befitting an L lens, using fluorite in the lens. Also, as an L lens, the images have high contrast. If you are interested or looking for this, how about it? Please note that returns are not accepted.