Comparison of Sigma APO 100-300mm ƒ/4 EX DG HSM and Sigma APO 100-300mm f/4 EX IF HSM

Attribute	Sigma APO 100-300mm ƒ/4 EX DG HSM ×	Sigma APO 100-300mm f/4 EX IF HSM ×
Filter Size (mm)	82	82
Notes	Available AF Mounts: [HSM version]: Sigma, Canon, Nikon; [w/o HSM]: Pentax, Sony	Available AF Mounts: [100-300mm F4 APO EX IF HSM]: Sigma, Canon, Nikon; [100-300mm APO F4 EX IF]: Minolta, Pentax
Closest Focus (m)	1.8	1.8
Magnification Ratio (x)	0.2	0.2
Type	Telephoto Zoom	Telephoto Zoom
Length (mm)	226.5	226.5
APS Equivalent	1.5x: 150 - 450mm; 1.6x: 160 - 480mm	1.5x: 150 - 450mm; 1.6x: 160 - 480mm
Zoom System	Rotary; Internal	Rotary; Internal
Image Circle	35mm	35mm
Focal Length (mm)	100.00 - 300.00	100.00 - 300.00
Brand	Sigma	Sigma
Name	Sigma APO 100-300mm ƒ/4 EX DG HSM	Sigma APO 100-300mm f/4 EX IF HSM
Weight (g)	1440	1440
Aperture (f)	4.00 - 32.00	4.00 - 32.00
Diaphragm Blades	9	9
Diagonal Angle of View (degree)	8.20 - 24.40	8.20 - 24.40
Lens Construction	16 elements in 14 groups, including 4 SLD elements	16 elements in 14 groups, including 4 SLD elements
Diameter (mm)	92.4	92.4
Focus Details	Internal; HSM with full-time manual override	Internal; HSM with full-time manual override