Comparison of Sigma 10mm f/2.8 EX DC Fisheye HSM and Sigma 15-30mm f/3.5-4.5 EX DG Aspherical

Attribute	Sigma 15-30mm f/3.5-4.5 EX DG Aspherical ×	Sigma 10mm f/2.8 EX DC Fisheye HSM ×
Diagonal Angle of View (degree)	71.60 - 110.50	180.00
Notes	Available AF Mounts: Sigma, Canon, Nikon, Minolta, Pentax	Available AF Mounts: Canon, Nikon, Pentax, Sigma, Sony; Included Accessories: Gelatin Filter Holder, Padded Case
Aperture (f)	3.50 - 22.00	2.80 - 22.00
Closest Focus (m)	0.3	0.14
Magnification Ratio (x)	0.17	0.3
Type	Wide Zoom	Wide Prime
Focus Details	Internal Focus with Dual Focus mechanism	Internal; HSM with full-time manual focus override
APS Equivalent	1.5x: 22.5 - 45mm; 1.6x: 24 - 48mm	1.5x: 15mm; 1.6x: 16mm
Diaphragm Blades	8	7
Image Circle	35mm	APS-C
Focal Length (mm)	15.00 - 30.00	10.00
Brand	Sigma	Sigma
Name	Sigma 15-30mm f/3.5-4.5 EX DG Aspherical	Sigma 10mm f/2.8 EX DC Fisheye HSM
Weight (g)	615	475
Diameter (mm)	87	75.8
Length (mm)	132.5	83.1
Zoom System	Rotary	-
Lens Construction	17 elements in 13 groups, including 2 aspherical elements	12 Elements in 7 Groups