Lenses comparison


Manufacturer	Sigma	Sigma	Canon	Sigma	Tamron
Model	150 mm f/2.8 APO EX DG OS HSM Macro	150 mm f/2.8 EX DG HSM APO Macro	EF 180 mm f/3.5L Macro USM	180 mm f/3.5 EX DG HSM Macro APO	SP AF 180 mm f/3.5 Di LD (IF) Macro
Lenst style	Telephoto	Telephoto	Telephoto	Telephoto	Telephoto
Focal length	150 mm	150 mm	180 mm	180 mm	180 mm
Maximum aperture	f/2.8	f/2.8	f/3.5	f/3.5	f/3.5
Angle of view	16.4 ^o	16.4 ^o	13.7 ^o	13.7 ^o	14 ^o
Closest focusing distance	0.38 m	0.38 m	0.48 m	0.46 m	0.47 m
Maximum magnification	1:1	1:1	1:1	1:1	1:1
Minimum aperture	22	22	32	32	32
Diaphragm blades	9	9	8	9	7
Auto focus type	HSM	AF HSM	USM	AF HSM
Lens Construction	19 elements / 13 group	16 elements / 12 group	14 elements / 12 group	13 elements / 10 group	11 elements / 14 group
Filter diameter	72 mm	72 mm	72 mm	72 mm	72 mm
Macro Yes/No	Yes	Yes	Yes	Yes	Yes
Stabilization	Yes	No	No	No	No
Available mounts	Canon EF Nikon F Sony A / Minolta Sigma Pentax K Four Thirds	Canon EF Nikon F Sigma	Canon EF	Canon EF Nikon F Sony A / Minolta Sigma Pentax K	Canon EF Nikon F Sony A / Minolta
Dimensions	79.6 x 150 mm	79.6 x 137 mm	82.5 x 186.6 mm	80 x 179.5 mm	84.8 x 165.7 mm
Weight	1180 g	895 g	1090 g	945 g	920 g
Additional information	3 SLD elements		Marketed April 1996	No HSM in version for KM/Sony and Pentax/Samsung
Score [max 5.00]	4.89 (3)	4.78 (12)	4.67 (1)	No score	4.78 (3)
Our Review	Review	Review		Review