Attribute | Sigma 15mm f/2.8 EX DG Diagonal Fisheye × | Sigma 8mm f/4 EX DG Circular Fisheye × |
---|---|---|
Type | Fisheye Prime | Fisheye Prime |
Name | Sigma 15mm f/2.8 EX DG Diagonal Fisheye | Sigma 8mm f/4 EX DG Circular Fisheye |
Weight (g) | 370 | 320 |
Image Circle | 35mm | 35mm |
Brand | Sigma | Sigma |
APS Equivalent | 1.5x: 22.5mm; 1.6x: 24mm | 1.5x: 12mm; 1.6x: 12.8mm |
Focal Length (mm) | 15.00 | 8.00 |
Lens Construction | 7 elements in 6 groups | 10 Elements in 6 Groups |
Diaphragm Blades | 7 | 5 |
Magnification Ratio (x) | 0.26 | 0.07 |
Closest Focus (m) | 0.15 | 0.2 |
Notes | Available AF Mounts: Sigma, Canon, Nikon, Minolta, Pentax | Available AF Mounts: Sigma, Canon, Nikon, Minolta, Pentax; Included Accessories: Gelatin Filter Holder, Fitted, Padded Case |
Aperture (f) | 2.80 - 22.00 | 4.00 - 32.00 |
Diagonal Angle of View (degree) | 180.00 | 180.00 |
Diameter (mm) | 73.5 | 73.5 |
Length (mm) | 65 | 63 |