Comparison of Canon EF-S 18-55mm f/3.5-5.6 USM and Pentax 18-50mm f/4-5.6 DC WR RE HD DA

Attribute	Canon EF-S 18-55mm f/3.5-5.6 USM ×	Pentax 18-50mm f/4-5.6 DC WR RE HD DA ×
Aperture (f)	3.50 - 38.00	4.00 - 32.00
Filter Size (mm)	58	58
Notes	EF-S lens mount, exclusively for EOS 20D, Digital Rebel, and newer bodies with APS-C sensors.	Weather resistant; Included Accessories: Lens hood; case optional
Closest Focus (m)	0.28	0.3
Magnification Ratio (x)	0.28	0.23
Diameter (mm)	69	71
Type	Standard Zoom	Standard Zoom
APS Equivalent	29 - 88mm	27 - 75mm
Diaphragm Blades	6	7
Image Circle	APS-C	APS-C
Focal Length (mm)	18.00 - 55.00	18.00 - 50.00
Brand	Canon	Pentax
Name	Canon EF-S 18-55mm f/3.5-5.6 USM	Pentax 18-50mm f/4-5.6 DC WR RE HD DA
Weight (g)	190	165
Diagonal Angle of View (degree)	27.80 - 75.30	31.50 - 76.00
Lens Construction	11 elements in 9 groups; 1 aspherical element	11 elements in 8 groups, including super-low dispersion glass elements and aspherical elements; SP (Super Protect) Coating, HD PENTAX Coating
Zoom System	Rotary	Rotary
Length (mm)	66	41
Diaphragm Blades Type	-	rounded
Focus Details	Inner focusing; USM	Internal with DC motor, "Quick Shift" AF/MF mechanism