> The lens I have was dropped at least once because it has a dent on it. I know the old lenses can also take some rough handling.. do you know if there is a dig

> The lens I have was dropped at least once because it has a dent on it. I know the old lenses can also take some rough handling.. do you know if there is a digital way to tell whether or not it is still focusing and adjusting the aperture properly short of shooting a bunch of test charts on a tripod? Take some picture of something flat like a brick wall and if one side is in focus and the other isn’t then you have a misaligned element. It’s really easy to spot. To check the aperture turn the aperture ring and check that the blades aren’t sticking or obviously f*ked up. . If your photos are exposing properly according to the Sunny 16 rule then it’s good enough. Old lenses have a lot of sample variation so it might be a special lens.