Sigma 20mm F1.8 EX DG Aspherical RF
Camera lens price in bangladesh
| Official Price | BDT-53,850 |
|---|
| Lens type | Prime lens |
| Max Format size | 35mm FF |
| Focal length | 20 mm |
| Image stabilization | No |
| Lens mount | Canon EF, Nikon F (FX), Pentax KAF, Sigma SA Bayonet, Sony/Minolta Alpha |
| Aperture | |
| Maximum aperture | F1.8 |
| Minimum aperture | F22 |
| Aperture ring | Yes |
| Number of diaphragm blades | 9 |
| Optics | |
| Elements | 13 |
| Groups | 11 |
| Special elements / coatings | 2 aspherical elements |
| Focus | |
| Minimum focus | 0.20 m (7.87″) |
| Autofocus | Yes |
| Full time manual | Yes |
| Focus method | Rear |
| Focus notes | dual focus mechanism |
| Distance scale | Yes |
| DoF scale | Yes |
| Physical | |
| Weight | 520 g (1.15 lb) |
| Diameter | 89 mm (3.49″) |
| Length | 90 mm (3.52″) |
| Colour | Black |
| Filter thread | 82 mm |
| Hood supplied | Yes |
| Hood product code | petal type hood |
| Tripod collar | No |
| Other |
Manufacturer description
The Sigma 20mm F1.8 EX DG Aspherical Macro is a standard wide-angle lens for full-frame and APS-C digital SLRs. Although not a new lens, it remains popular for its combination of good build quality, a usefully fast aperture of F1.8 and decent optics.
You don’t get Sigma’s HSM ultrasonic-type autofocus motor but a clever manual/auto focus clutch gives quick access to manual focus if you need to fine-tune.
