I got it as part of a bundle for my 6D, and I shot it with apertures ranging from 1.8 to 2.8 most of the time. In terms of the level of detail, the picture appeared to be very standard at 20 megapixels. However, when I switched the camera to an EOS R, I discovered that this glass already has a somewhat low resolution, making it unable to fully utilize the camera's capacity of 30 megapixels. The rationale for the selling was as stated above. After two years of service, the lens maintained its optical and mechanical quality to the same level as when it was brand new.