Comparison of Sigma 100-400mm f/5-6.3 DG OS HSM Contemporary and Sigma APO 135-400mm f/4.5-5.6 Aspherical

Attribute	Sigma APO 135-400mm f/4.5-5.6 Aspherical ×	Sigma 100-400mm f/5-6.3 DG OS HSM Contemporary ×
Aperture (f)	4.50 - 32.00	5.00 - 22.00
Filter Size (mm)	77	67
Notes	Available AF Mounts: Sigma, Canon, Nikon, Minolta, Pentax	Available AF Mounts: Sigma SA, Canon EF, Nikon F; Image Stabilized; Mount with dust- and splash-proof design; Compatible with Mount Converter MC-11
Closest Focus (m)	2	1.6
Magnification Ratio (x)	0.19	0.26
Diameter (mm)	88.5	86.4
Type	Telephoto Zoom	Telephoto Zoom
APS Equivalent	1.5x: 202.5 - 600mm; 1.6x: 216 - 640mm	1.5x: 150 - 600mm; 1.6x: 160 - 640mm
Diaphragm Blades	9	9
Image Circle	35mm	35mm
Focal Length (mm)	135.00 - 400.00	100.00 - 400.00
Brand	Sigma	Sigma
Name	Sigma APO 135-400mm f/4.5-5.6 Aspherical	Sigma 100-400mm f/5-6.3 DG OS HSM Contemporary
Weight (g)	1245	1160
Diaphragm Blades Type	-	rounded
Lens Construction	13 elements in 11 groups, including 1 aspherical and 3 SLD elements	21 elements in 15 groups, including 4 SLD elements
Zoom System	Rotary	Push/Pull
Length (mm)	183.5	182.3
Diagonal Angle of View (degree)	6.20 - 18.20	-
Focus Details	Internal	Internal; HSM with full-time manual override