The Panasonic LUMIX S PRO 16-35mm F4 is a zoom lens designed for professionals and has an L-mount.

The lens belongs to the Panasonic's PRO lineup, this means that it is the highest quality lens that Panasonic offers.
The lens is built up of 12 elements in 9 groups, has a series of aspherical, low-dispersion and high refractive index elements to control a variety of aberrations, distortion, color fringing and distortion.

For focusing the lens makes use of a double-magnet linear motor to deliver fast, silent and accurate autofocus performance. In addition the lens is weather proof, has an angle of view of 107° to 63° and a minimum focus distance of 25 cm.

Finally, the lens has a 77mm filter thread, weighs only 500 grams and the dimensions are 85 x 99.6 mm.