Leica M Series Lenses Compact, lightweight and covering an optimum range of practical applications, Leica M lenses offer a unique optical performance that has secured them a leading position throughout the world. With focal lengths ranging from 21 to 135mm and speeds of up to f/1.0, these valuable precision lenses are distinguished for their superb imaging performance and long service life. Other features include: Excellent sharpness, high-contrast performance and an extreme resolving power even at full aperture Extremely compact design using lens elements with high refractive indices and low dispersion values Uniform, neutral colour rendition Exceptional freedom from flare due to special Leica multiple coating Long service even in tough, everyday professional use and smooth focusing thanks to the mechanical precision of the metal helical focusing mounts. The 90 mm f/2.8 ELMARIT-M is a compact universal lens with a medium focal length and very good contrast and sharpness performance, even at full aperture. Its black version weighs barely more than 400 grams or 14 ounces, and it is only slightly larger than a 50 mm lens. Thus it is an ideal lightweight alternative that you can always take along when you travel. It comes with a built-in sliding lens hood.