Focal Length	Iris	Close Focus	Weight
19	T2.9 - 16	22 cm / 9"	1100 g
28	T2.9 - 16	22 cm / 9"	1000 g
35	T1.5 - 16	50 cm / 1'8"	1500 g
50	T1.5 - 16	42 cm / 1'5"	1100 g
60 Macro	T2.9 - 16	26 cm / 10"	1500 g
80	T1.5 - 16	65 cm / 2'2"	1600 g
100 Macro	T2.9 - 16	43 cm / 1'5"	2000 g
135	T2.9 - 16	110 cm / 3'7"	1650 g

Front Diameter: 110mm