Comparison of Sigma 8-16mm ƒ/4.5-5.6 DC HSM and Sigma 12-24mm ƒ/4.5-5.6 EX DG Aspherical HSM

Attribute	Sigma 12-24mm ƒ/4.5-5.6 EX DG Aspherical HSM ×	Sigma 8-16mm ƒ/4.5-5.6 DC HSM ×
Diagonal Angle of View (degree)	84.10 - 122.00	75.70 - 114.50
Notes	Available AF Mounts: [HSM version]: Sigma, Canon, Nikon; [w/o HSM]: Minolta, Pentax	Available AF Mounts: [HSM version]: Sigma, Canon, Nikon; [w/o HSM]: Minolta, Pentax
Aperture (f)	4.50 - 22.00	4.50 - 29.00
Closest Focus (m)	0.28	0.24
Magnification Ratio (x)	0.14	0.13
Type	Wide Zoom	Ultra Wide Zoom
Focus Details	Internal Focus; HSM with full-time manual override	Internal Focus; HSM with full-time manual override
APS Equivalent	1.5x: 18 - 36mm; 1.6x: 19.2 - 38.4mm	1.5x: 12 - 24mm; 1.6x: 12.8 - 25.6mm
Diaphragm Blades	6	7
Image Circle	35mm	APS-C
Focal Length (mm)	12.00 - 24.00	8.00 - 16.00
Brand	Sigma	Sigma
Name	Sigma 12-24mm ƒ/4.5-5.6 EX DG Aspherical HSM	Sigma 8-16mm ƒ/4.5-5.6 DC HSM
Weight (g)	600	555
Zoom System	Rotary	Rotary
Length (mm)	102.5	75
Diameter (mm)	87	105.7
Lens Construction	16 elements in 12 groups, including 3 aspherical and 4 SLD elements	15 Elements in 11 Groups, including 3 aspherical and 4 FLD elements