The Carl Zeiss Sonar 2.8/90 lens boasts high light transmission thanks to its T* coating, providing excellent descriptive power. - Brand: Carl Zeiss - Model Name: Sonar 2.8/90 - Aperture: 2.8-16 - Features: T* coating Accessories CONTAX METAL HOOD GG-1 The hood is slightly distorted. P-FILTER CONTAX G mount Cap There is dust inside the lens, but it should not affect the image quality. I was recently using it with an adapter on a Sony E-mount camera.