The Panasonic 7-14mm 4.0 Lumix G Vario is a compact and light ultra wide angle lens made for micro four thirds. Thanks to the angle of view of 114 degrees, you get the subject easily in the frame even in locations where the space is limited. It is made of high quality glass elements for less chromatic aberrations and better image quality. Further, it has a minimum focussing distance of 25cm and is made of 16 elements in 12 groups. 

The measurements of the lens are 75 x 88,1 x 83,1 mm and it weighs only 300g.