Sigma EX 20mm F1.8 DG ASP RF vs Sigma EX 15mm F2.8 DG Fisheye
This is a full comparison between the lenses Sigma EX 20mm F1.8 DG ASP RF and Sigma EX 15mm F2.8 DG Fisheye .
Compare Specifications
Product |
Sigma EX 20mm F1.8 DG ASP RF |
Sigma EX 15mm F2.8 DG Fisheye |
| Name | Sigma EX 20mm F1.8 DG ASP RF | Sigma EX 15mm F2.8 DG Fisheye |
| Manufacturer | Sigma | Sigma |
| SKU | ||
Release Date and Price |
Sigma EX 20mm F1.8 DG ASP RF |
Sigma EX 15mm F2.8 DG Fisheye |
| Release Year | 2008 | 2005 |
| Release Date | ||
| MSRP | 670 USD | 940 USD |
| Buy it today |
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Lens Type |
Sigma EX 20mm F1.8 DG ASP RF |
Sigma EX 15mm F2.8 DG Fisheye |
| Lens Type | Wide Angle Lens |
Wide Angle Lens Fisheye |
| Zoom or Prime | Prime lens (no zoom) | Prime lens (no zoom) |
Mount and Compatibility |
Sigma EX 20mm F1.8 DG ASP RF |
Sigma EX 15mm F2.8 DG Fisheye |
| Mount | Canon EFNikon F | Canon EFNikon F |
| Designed for APS-C sensor | No (Suitable for all sensors) | No (Suitable for all sensors) |
Focus |
Sigma EX 20mm F1.8 DG ASP RF |
Sigma EX 15mm F2.8 DG Fisheye |
| Autofocus (AF) | YesNote. See below for further information | YesNote. See below for further information |
| Built-in Autofocus (AF) Motor |
No
Requires that the camera has an Autofocus Motor Compatible Cameras for Sigma EX 20mm F1.8 DG ASP RF |
No
Requires that the camera has an Autofocus Motor Compatible Cameras for Sigma EX 15mm F2.8 DG Fisheye |
| Motor Type | N/A | N/A |
| Focus Method | No information | No information |
| Closest Focusing Distance | 20 cm | 15 cm |
| Maximum Magnification | ||
Aperture |
Sigma EX 20mm F1.8 DG ASP RF |
Sigma EX 15mm F2.8 DG Fisheye |
| Maximum Aperture | F1,8 | F2,8 |
| Diaphragm Blades | No information | No information |
Optics |
Sigma EX 20mm F1.8 DG ASP RF |
Sigma EX 15mm F2.8 DG Fisheye |
| Construction | 13 elements / 11 groups | 7 elements / 6 groups |
| Special Elements/Coatings | No information | No information |
Focal Length |
Sigma EX 20mm F1.8 DG ASP RF |
Sigma EX 15mm F2.8 DG Fisheye |
| Focal Length | 20 mm | 15 mm |
| Zoom Range | None (Prime lens) No Zoom available. |
None (Prime lens) No Zoom available. |
| Built-in Teleconverter | No | No |
| Teleconverter Multiplier | N/A | N/A |
| Image Stabilization | No | No |
| Image Stabilization CIPA Rating | N/A | N/A |
Physical |
Sigma EX 20mm F1.8 DG ASP RF |
Sigma EX 15mm F2.8 DG Fisheye |
| Weather Sealing | No | No |
| Diameter | 88 mm | 73 mm |
| Length | 89 mm | 65 mm |
| Weight | 520 gr | 370 gr |
Other |
Sigma EX 20mm F1.8 DG ASP RF |
Sigma EX 15mm F2.8 DG Fisheye |
| Filter Type | Filter Thread | Drop-in Filter |
| Filter Diameter | 82 mm | N/A |
| Lens Hood | Included | Included (Solid Construction) |
| Lens Hood SKU | LH875-02 548 | N/A |
| Tripod Collar | N/A | N/A |
| Tripod Collar SKU | N/A | N/A |