Comparison of Nikon 18-140mm ƒ/3.5-5.6G ED AF-S DX VR Nikkor and Sigma 24-135mm f/2.8-4.5 Aspherical IF

Attribute	Sigma 24-135mm f/2.8-4.5 Aspherical IF ×	Nikon 18-140mm ƒ/3.5-5.6G ED AF-S DX VR Nikkor ×
Notes	Available AF Mounts: Sigma, Canon, Nikon, Minolta, Pentax	VR (Vibration Reduction) minimizes camera shake by offering a shutter speed equivalent to 4.0 stops faster
Magnification Ratio (x)	0.22	0.23
Filter Size (mm)	77	67
Length (mm)	90.9	97
Closest Focus (m)	0.5	0.45
Diagonal Angle of View (degree)	18.20 - 84.10	11.50 - 76.00
Focus Details	Internal	Internal; AF-S "Silent Wave" motor with full-time manual focus override feature (M/A Switch)
Focal Length (mm)	24.00 - 135.00	18.00 - 140.00
APS Equivalent	1.5x: 36 - 202.5mm; 1.6x: 38.4 - 216mm	27 - 210mm
Brand	Sigma	Nikon
Image Circle	35mm	APS-C
Name	Sigma 24-135mm f/2.8-4.5 Aspherical IF	Nikon 18-140mm ƒ/3.5-5.6G ED AF-S DX VR Nikkor
Weight (g)	530	490
Type	Standard Zoom	Standard Zoom
Aperture (f)	2.80 - 32.00	3.50 - 36.00
Diaphragm Blades	9	7
Diaphragm Blades Type	-	rounded
Lens Construction	16 elements in 15 groups, including 2 aspherical and 1 SLD elements	17 elements in 12 groups; including 1 ED glass and 1 aspherical element
Zoom System	Rotary	Rotary
Diameter (mm)	83.6	78