The APO Macro Summarit-S 120mm f/2.5 CS is equipped with an integrated central focal-plane shutter (also known as a leaf shutter). Photographers can activate the shutter via the camera's main switch and it enables flash units to be used at a shutter speed of 1/500 second. The shutter also has an electronically-controlled drive guaranteeing reliable, fast exposure times and low energy consumption.

This lens is suited for many applications due to its superb close-up and telephoto capabilities. It displays maximum performance even at full aperture settings. Vignetting, distortion and chromatic aberrations have been minimized to such a high degree that the need for quality-degrading image corrections and simplifying digital post-processing is substantially reduced.

It has its own Leica-designed microprocessor for precise autofocus and iris diaphragm control with silent gearing and it has a focus ring with enough drag to let the user to override the autofocus at any time.

• This lens is designed with special grades of glass and aspherical surfaces.

• S-bayonet mount ensures rapid and precise digital exchange of data and commands between the camera and lens.

• Lens has its own Leica-designed microprocessor for precise autofocus and iris diaphragm control.

• Generous focus ring with just the right amount of drag, letting the photographer override the autofocus at any time.

• The lens is produced to extremely narrow tolerances, with each lens centered by hand, guaranteeing superior quality and optical performance.

• The integrated leaf shutter allows flash units to be used at the fastest shutter speed of 1/500 second, giving photographers more options for suppressing unwanted ambient light.