Thank you for viewing. I am selling a Sigma zoom lens set, K-mount lenses. The 28-80 allows for macro photography by switching the dial, with a minimum focusing distance of 25 cm. The second photo is of the 100-300 at its widest aperture, held up to the light, and both the front and rear elements are clear. The third photo is of the 28-80 at its widest aperture, held up to the light, and there is a slight amount of mold on the rear element. If you wish, I will include a suitable lens filter for front element protection as a bonus. Also, if anyone wants a Starry Night (φ55 mm) filter for astrophotography, I will include it for an additional 500 yen. Please comment if you would like either of these. Please consider purchasing.