Panasonic Lumix DMC-L1 Operating Instructions Manual page 124

Others
Interchangeable Lens
(L-ES014050)
Focal length
Aperture type
Aperture range
Lens construction
In focus distance
Optical image
stabilizer
Mount
Max. diameter
Overall length
Mass
124
VQT0W82
"LEICA D VARIO-ELMARIT 14– 50 mm/F2.8– 3.5"
f=14 mm to 50 mm
(35 mm film camera equivalent: 28 mm to 100 mm)
7 leaf shutters/iris diaphragm
F2.8 (Wide) to F3.5 (Tele)
16 elements in 12 groups (2 aspherical lenses)
0.29 m (0.95 feet) to ¶ (from the focus distance reference line)
Available
"Four Thirds Mount"
78.1 mm (3.07 inch)
Approx. 97.4 mm (3.83 inch)
(from the tip of the lens to the base side of the lens mount)
Approx. 490 g (17.3 oz)