Leica 18mm/f3.8 ASPH. 11649 Camera Lenses The 18mm Super-Elmar is the perfect cross between design and performance. Giving compact size and ultimate imaging quality, making this lens the wide angle photographer's go to choice. With eight elements and one element having two aspheric surface,this lens ensures outstanding perfromance even at wide open apeture. The compact design of this lens is achieved partly with Leica's new space saving lenshood sytem, that has proven extremely effective in all lighting conditions.