Ultra wide angle with a speed and compactness so far unmatched in this type of lens. Outstanding sharpness over the whole focusing range down to close

Ultra wide angle with a speed and compactness so far unmatched in this type of lens. Outstanding sharpness over the whole focusing range down to close-ups of 0,4 m comes from the automatic " floating elements correction". All in all, an interesting alternative to the classic 40mm Distagon.