Comparison of Nikon 18-105mm f/3.5-5.6G ED VR AF-S DX Nikkor and Pentax 28-105mm f/3.5-5.6 ED D FA HD DC WR

Attribute	Pentax 28-105mm f/3.5-5.6 ED D FA HD DC WR ×	Nikon 18-105mm f/3.5-5.6G ED VR AF-S DX Nikkor ×
Aperture (f)	3.50 - 38.00	3.50 - 38.00
Filter Size (mm)	62	67
Notes	WR (Weather Resistant); Included Accessories: Lens Hood PH-RBC62, Lens Cap O-LC62, Lens Mount Cap K.	Image Stabilization. DX Nikkor for use with Nikon APS-C digital SLR models. Included Accessories: HB-32 Bayonet lens hood, CL-1018 Flexible lens pouc
Closest Focus (m)	0.5	0.45
Magnification Ratio (x)	0.22	0.2
Zoom System	Rotary	Rotary
Type	Standard Zoom	Standard Zoom
APS Equivalent	43 - 161mm	27 - 157.5mm
Diaphragm Blades	9	7
Image Circle	35mm	APS-C
Focal Length (mm)	28.00 - 105.00	18.00 - 105.00
Brand	Pentax	Nikon
Name	Pentax 28-105mm f/3.5-5.6 ED D FA HD DC WR	Nikon 18-105mm f/3.5-5.6G ED VR AF-S DX Nikkor
Weight (g)	463	420
Diaphragm Blades Type	rounded	rounded
Lens Construction	15 elements in 11 groups, including 1 ED (Extra-low Dispersion) element, 1 anomalous-dispersion glass element and 2 aspherical elements; HD coating	15 elements in 11 groups, including 1 ED and 1 hybrid aspherical element
Diagonal Angle of View (degree)	23.50 - 75.00	15.30 - 76.00
Length (mm)	86.5	89
Diameter (mm)	73	76
Focus Details	DC Motor; Internal with "Quick Shift" AF/MF mechanism	Internal; AF-S "Silent Wave" motor