Comparison of Konica Minolta AF 16mm f/2.8 Fisheye and Sigma 8mm f/3.5 EX DG Circular Fisheye

Attribute	Konica Minolta AF 16mm f/2.8 Fisheye ×	Sigma 8mm f/3.5 EX DG Circular Fisheye ×
Weight (g)	400	400
Type	Fisheye Prime	Fisheye Prime
Brand	Konica-minolta	Sigma
Name	Konica Minolta AF 16mm f/2.8 Fisheye	Sigma 8mm f/3.5 EX DG Circular Fisheye
Focal Length (mm)	16.00	8.00
Image Circle	35mm	35mm
Lens Construction	11 elements in 8 groups	11 Elements in 6 Groups, with 1 SLD element
Diameter (mm)	74	73.5
Closest Focus (m)	0.21	0.14
Focus Details	Rear focusing	-
Magnification Ratio (x)	0.15	0.22
Aperture (f)	2.80 - 22.00	3.50 - 22.00
Diagonal Angle of View (degree)	180.00	180.00
Notes	-	Available AF Mounts: Sigma, Canon, Nikon, (Pentax and Sony TBD); Included Accessories: Gelatin Filter Holder, Padded Case
APS Equivalent	24mm	1.5x: 12mm; 1.6x: 12.8mm
Diaphragm Blades	-	6
Length (mm)	69	68.6