A compound camera lens designed to correct the optical aberration known as astigmatism, which can cause points of light to appear stretched or blurred in certain areas of an image. Anastigmat lenses produce sharper, more accurate images across the entire frame, improving clarity, detail, and overall image quality. They are commonly used in both photographic and cinematographic lenses to provide consistent focus and reduce distortion, making them ideal for portraits, landscapes, and technical photography where precision is essential.