Comparison of Sigma 10mm f/2.8 EX DC Fisheye HSM and Sigma 12-24mm ƒ/4.5-5.6 EX DG Aspherical HSM

Attribute	Sigma 10mm f/2.8 EX DC Fisheye HSM ×	Sigma 12-24mm ƒ/4.5-5.6 EX DG Aspherical HSM ×
Diagonal Angle of View (degree)	180.00	84.10 - 122.00
Notes	Available AF Mounts: Canon, Nikon, Pentax, Sigma, Sony; Included Accessories: Gelatin Filter Holder, Padded Case	Available AF Mounts: [HSM version]: Sigma, Canon, Nikon; [w/o HSM]: Minolta, Pentax
Aperture (f)	2.80 - 22.00	4.50 - 22.00
Closest Focus (m)	0.14	0.28
Magnification Ratio (x)	0.3	0.14
Type	Wide Prime	Wide Zoom
Focus Details	Internal; HSM with full-time manual focus override	Internal Focus; HSM with full-time manual override
APS Equivalent	1.5x: 15mm; 1.6x: 16mm	1.5x: 18 - 36mm; 1.6x: 19.2 - 38.4mm
Diaphragm Blades	7	6
Image Circle	APS-C	35mm
Focal Length (mm)	10.00	12.00 - 24.00
Brand	Sigma	Sigma
Name	Sigma 10mm f/2.8 EX DC Fisheye HSM	Sigma 12-24mm ƒ/4.5-5.6 EX DG Aspherical HSM
Weight (g)	475	600
Diameter (mm)	75.8	87
Length (mm)	83.1	102.5
Zoom System	-	Rotary
Lens Construction	12 Elements in 7 Groups	16 elements in 12 groups, including 3 aspherical and 4 SLD elements