Comparison of Nikon 28-100mm f/3.5-5.6G AF Nikkor and Sigma 28-105mm f/3.8-5.6 UC-III Aspherical IF

Attribute	Nikon 28-100mm f/3.5-5.6G AF Nikkor ×	Sigma 28-105mm f/3.8-5.6 UC-III Aspherical IF ×
Diagonal Angle of View (degree)	24.30 - 74.00	23.30 - 75.40
Filter Size (mm)	62	62
Aperture (f)	3.50 - 22.00	3.80 - 22.00
Closest Focus (m)	0.56	0.5
Magnification Ratio (x)	0.21	0.18
Focus Details	-	Internal
Type	Standard Zoom	Standard Zoom
APS Equivalent	42 - 150mm	1.5x: 42 - 157.5mm; 1.6x: 44.8 - 168mm
Diaphragm Blades	7	7
Image Circle	35mm	35mm
Focal Length (mm)	28.00 - 100.00	28.00 - 105.00
Brand	Nikon	Sigma
Name	Nikon 28-100mm f/3.5-5.6G AF Nikkor	Sigma 28-105mm f/3.8-5.6 UC-III Aspherical IF
Weight (g)	244	275
Zoom System	Rotary	Rotary
Length (mm)	79	72.5
Diameter (mm)	69	71
Front Element Rotation	-	-
Notes	-	Available AF Mounts: Sigma, Canon, Nikon, Minolta, Pentax
Lens Construction	8 elements in 6 groups, including 1 aspherical element	13 elements in 12 groups, including 1 aspherical element