Comparison of Sigma APO 300mm ƒ/2.8 EX DG HSM and Sony 300mm f/2.8 G SSM II SAL300F28G2

Attribute	Sigma APO 300mm ƒ/2.8 EX DG HSM ×	Sony 300mm f/2.8 G SSM II SAL300F28G2 ×
Filter Size (mm)	46	42
Notes	Available AF Mounts: [HSM version]: Sigma, Canon, Nikon; [w/o HSM]: Minolta, Pentax	Thanks to a new LSI drive circuit, the SAL-300F28GII offers faster, more accurate autofocusing with four times faster object tracking performance tha
Closest Focus (m)	2.5	2
Magnification Ratio (x)	0.13	0.18
Type	Telephoto Prime	Telephoto Prime
Focus Details	Internal; HSM with full-time manual override	Internal; SSM (Super Sonic wave Motor) with Direct Manual Focus (2 modes), Focus Hold button, Focus Range selector, Prefocus function
APS Equivalent	1.5x: 450mm; 1.6x: 480mm	450mm
Diameter (mm)	119	122
Image Circle	35mm	35mm
Focal Length (mm)	300.00	300.00
Brand	Sigma	Sony
Name	Sigma APO 300mm ƒ/2.8 EX DG HSM	Sony 300mm f/2.8 G SSM II SAL300F28G2
Weight (g)	2400	2340
Aperture (f)	2.80 - 32.00	2.80 - 32.00
Diaphragm Blades	9	9
Diagonal Angle of View (degree)	8.20	8.20
Length (mm)	214.5	242.5
Diaphragm Blades Type	-	rounded
Lens Construction	11 elements in 9 groups, including 2 ELD elements	13 elements in 12 groups, including 3 ED elements