Focal Length	Iris	Close Focus	Weight
21mm	T2.5 - 16	35 cm / 1'2"	2850 g
28mm	T2.8 - 22	35 cm / 1'2"	2730 g
42mm	T2.5 - 16	45 cm / 1'6"	1850 g
56mm	T2 - 16	65 cm / 2'2"	1650 g
70mm	T2.5 - 16	80 cm / 2'7"	1650 g
84mm	T2.8 - 22	100 cm / 3'3"	1950 g

Front Diameter : 114mm