Comparison of Sigma APO 170-500mm f/5-6.3 Aspherical RF and Sigma APO 170-500mm f/5-6.3 DG

Attribute	Sigma APO 170-500mm f/5-6.3 Aspherical RF ×	Sigma APO 170-500mm f/5-6.3 DG ×
Filter Size (mm)	86	86
Notes	Available AF Mounts: Sigma, Canon, Nikon, Minolta, Pentax	Available AF Mounts: Sigma, Canon, Nikon, Minolta, Pentax
Closest Focus (m)	3	3
Magnification Ratio (x)	0.15	0.15
Type	Telephoto Zoom	Telephoto Zoom
Length (mm)	232	232
APS Equivalent	1.5x: 255 - 750mm; 1.6x: 272 - 800mm	1.5x: 255 - 750mm; 1.6x: 272 - 800mm
Zoom System	Rotary	Rotary
Image Circle	35mm	35mm
Focal Length (mm)	170.00 - 500.00	170.00 - 500.00
Brand	Sigma	Sigma
Name	Sigma APO 170-500mm f/5-6.3 Aspherical RF	Sigma APO 170-500mm f/5-6.3 DG
Weight (g)	1345	1345
Aperture (f)	5.00 - 32.00	5.00 - 32.00
Diaphragm Blades	9	9
Diagonal Angle of View (degree)	5.00 - 14.50	5.00 - 14.50
Lens Construction	13 elements in 11 groups, including 1 aspherical and 3 SLD elements	13 elements in 11 groups, including 1 aspherical and 3 SLD elements
Diameter (mm)	92.5	92.5
Focus Details	Internal	Internal