This dedicated ultra-wide converter for the Sony FE 28mm f2 lens provides an even wider 21mm focal length, and because it is specifically designed for this lens it delivers imposing wide perspective with high resolution throughout the image area from infinity down to the closest focusing distance, without compromising the lens's image quality (f2.
8 maximum aperture when mounted on FE 28mm f2).
The sophisticated design seamlessly matches the lens, and is dust and moisture resistant for maximum reliability.