Comparison of Sigma APO 50-500mm ƒ/4-6.3 EX DG HSM and Sigma 120-400mm f/4.5-5.6 DG OS HSM APO

Attribute	Sigma APO 50-500mm ƒ/4-6.3 EX DG HSM ×	Sigma 120-400mm f/4.5-5.6 DG OS HSM APO ×
Magnification Ratio (x)	0.19	0.24
Filter Size (mm)	86	77
Focus Details	Internal; HSM with full-time manual override	Internal, with HSM
Closest Focus (m)	1	1.5
Lens Construction	20 elements in 16 groups, including 4 SLD elements	21 elements in 15 groups, including 3 SLD elements
Length (mm)	218.5	203.5
Focal Length (mm)	50.00 - 500.00	120.00 - 400.00
Diagonal Angle of View (degree)	5.00 - 46.80	-
Brand	Sigma	Sigma
Image Circle	35mm	35mm
Name	Sigma APO 50-500mm ƒ/4-6.3 EX DG HSM	Sigma 120-400mm f/4.5-5.6 DG OS HSM APO
Weight (g)	1840	1750
Type	Telephoto Zoom	Telephoto Zoom
Notes	Available AF Mounts: [HSM version]: Sigma, Canon, Nikon, Four-Thirds; [w/o HSM]: Minolta, Pentax	Optically Stabilized; Available AF Mounts: Canon, Nikon, Pentax, Sigma, Sony
APS Equivalent	1.5x: 75 - 750mm; 1.6x: 80 - 800mm	1.5x: 180 - 600mm; 1.6x: 192 - 640mm
Aperture (f)	4.00 - 22.00	4.50 - 22.00
Diaphragm Blades	9	9
Zoom System	Rotary with lock	Rotary
Diameter (mm)	95	92.5