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4 lenses compared
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Dec 9, 2010
Jan 15, 2009
-
Sep 5, 2007
 
Zoom lens
Zoom lens
Zoom lens
Zoom lens
APS-C / DX
APS-C / DX
APS-C / DX
APS-C / DX
18–270 mm
18–250 mm
18–250 mm
18–250 mm
No
Yes (Up to 4 stops claimed)
No
No
Sony/Minolta Alpha DT
Canon EF-S, Nikon F (DX), Pentax KAF3, Sigma SA Bayonet, Sony/Minolta Alpha
Canon EF-S, Nikon F (DX), Pentax KAF, Sony/Minolta Alpha
Sony/Minolta Alpha
 
F3.5–6.3
F3.5–6.3
F3.5–6.3
F3.5–6.3
F22–40
F22–40
F22
F22–40
No
No
No
No
7
7
7
7
 
rounded blades
 
circular aperture
 
16
18
16
16
13
14
13
13
 
4 SLD glass elements 3 aspherical elements
1 AD element 2 LD elements 2 Hybrid aspherical element
 
 
0.49 m (19.29)
0.45 m (17.72)
0.45 m (17.72)
0.45 m (17.72)
0.26×
0.29×
 
0.29×
Yes
Yes
Yes
Yes
Micro-type ultrasonic
Micro-type ultrasonic
Micromotor
Screw drive from camera
No
Unknown
Unknown
Unknown
Internal
Internal
Internal
Internal
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
 
450 g (0.99 lb)
628 g (1.38 lb)
430 g (0.95 lb)
440 g (0.97 lb)
74 mm (2.93)
79 mm (3.11)
74 mm (2.93)
75 mm (2.95)
88 mm (3.46)
101 mm (3.98)
84 mm (3.32)
86 mm (3.39)
Plastic barrel, metal mount
Plastic barrel, metal mount
 
 
No
 
 
 
Black
Black
Black
Black
Rotary (extending)
Rotary (extending)
Rotary (extending)
Rotary (extending)
No
 
 
 
Yes
Yes
Yes
 
62.0 mm
72.0 mm
62.0 mm
62.0 mm
 
does not rotate on focus
 
 
Yes
Yes
Yes
Yes
 
 
flower shaped hood
petal shaped hood
No
 
No
No