Lenses comparison


Manufacturer	Sigma	Pentax	Nikon Nikkor	Sony
Model	17-70 mm f/2.8-4.0 DC Macro OS HSM	smc DA 17-70 mm f/4.0 AL [IF] SDM	AF-S DX 18-70 mm f/3.5-4.5 IF-ED	Carl Zeiss Vario-Sonnar T* DT 16-80 mm f/3.5-4.5
Lenst style	Universal zoom	Universal zoom	Universal zoom	Universal zoom
Focal length	17 - 70 mm	17 - 70 mm	18 - 70 mm	16 - 80 mm
Maximum aperture	f/2.8 - 4	f/4	f/3.5 - 4.5	f/3.5 - 4.5
Angle of view	72.4 - 20.2 ^o	79 - 23 ^o	76 - 22.5 ^o	83 - 20 ^o
Closest focusing distance	0.22 m	0.28 m	0.38 m	0.35 m
Maximum magnification	1:2.7	1:3.2	1:6.2	1:4.16
Minimum aperture	22	22	29	29
Diaphragm blades	7	7	7	7
Auto focus type	HSM	SDM	AF	AF
Lens Construction	17 elements / 13 group	17 elements / 12 group	15 elements / 13 group	14 elements / 10 group
Filter diameter	72 mm	67 mm	67 mm	62 mm
Macro Yes/No	Yes	No	No	No
Stabilization	Yes	No	No	No
Available mounts	Nikon F Sony A / Minolta Pentax K Canon EF-S	Pentax K	Nikon F	Sony A / Minolta
Dimensions	88.9 x 79 mm	75 x 93.5 mm	73 x 75.5 mm	72 x 83 mm
Weight	535 g	485 g	390 g	445 g
Additional information	three aspherical elements, one ELD element, Super Multi-Layer Coatings	Marketed 03.06.2008	Marketed 2004	2 aspherical lenses. Anounced: June 2006.
Score [max 5.00]	4.15 (24)	3.67 (7)	3.88 (8)	4.17 (6)
Our Review	Review	Review	Review	Review