Sigma Super Wide Angle 20mm f/1.8 (D) EX Aspherical DG DF RF Autofocus Lens for Sony Alpha & Minolta Maxxum Series
This 20mm is a Super wide-angle lens with a large aperture of f/1.8 and angle of view 94.5°. It has Macro focusing capability with a minimum focusing distance of just 7.9", for a reproduction ratio of 1:4. The 9-bladed iris diaphragm obtains beautiful out of focus image characteristics. Aspherical lens elements in the front & rear lens groups minimize distortion, spherical aberration and astigmatisms. The lens has non-vignetting optical construction in order to obtain adequate peripheral brightness with wide apertures-especially desirable for digital cameras. The lens incorporates a rear focus system eliminating front lens rotation. The focusing ring does not rotate during autofocus yet provides adequate focusing torque of the focusing ring during manual focusing of the lens. The lens materials used in this new lens are lead and arsenic free ecological glass.
Go To
| Performance | |
|---|---|
| Focal Length | 20 mm |
| Aperture |
Maximum: f/1.8 Minimum: f/22 |
| Camera Mount Type | Sony Alpha, Minolta AF |
| Format Compatibility |
35mm Film / Full-Frame Digital Sensor DSLR (APS-C Sensor) |
| Angle of View | 94.5° |
| Minimum Focus Distance | 7.9" (20.07 cm) |
| Magnification | 0.25x |
| Maximum Reproduction Ratio | 1:4 |
| Groups/Elements | 11/13 |
| Diaphragm Blades | 9 |
| Features | |
|---|---|
| Image Stabilization | No |
| Autofocus | Yes |
| Tripod Collar | No |
| Physical | |
|---|---|
| Filter Thread | 82 mm |
| Dimensions (DxL) | Approx. 3.5 x 3.4" (8.89 x 8.64 cm) |
| Weight | 1.14 lb (520 g) |
REVIEW SNAPSHOT®
by PowerReviews(based on 4 reviews)
Ratings Distribution
100%
of respondents would recommend this to a friend.
Pros
- Consistent output (3)
- Easily interchangeable (3)
- Strong construction (3)
Cons
- Heavy (3)
Best Uses
REVIEWS
Reviewed by 4 customers
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Displaying reviews 1-4
Pros
- Consistent Output
- Easily Interchangeable
- Nice Bokeh
Cons
- Heavy
Best Uses
- Indoors/Low Light
- Landscape/Scenery
- Macro Photography
- Night Photography
- Sports/Action
Comments about Sigma 20mm f/1.8 (D) EX Aspherical DG DF RF AF Lens:
I love to work with wide-angle lenses.
Specialy I like de F/1.8 focus on this lens. This means that you can use a wide-angle and a limited dept-of-field together in one picture...
And it is verry affordable !
- Was this a gift?:
- No
Pros
- Strong Construction
Cons
Best Uses
- Video
- Weddings/Events
Comments about Sigma 20mm f/1.8 (D) EX Aspherical DG DF RF AF Lens:
Did not work with my Sony a33 camera at first, had to send it to Sigma for update. came back in a week and works great. very nice DOF, using on glidecam and love it.
- Was this a gift?:
- No
Pros
- Consistent Output
- Easily Interchangeable
- Strong Construction
Cons
- Heavy
- Slow Focus
Best Uses
- Indoors/Low Light
- Landscape/Scenery
- Night Photography
Comments about Sigma 20mm f/1.8 (D) EX Aspherical DG DF RF AF Lens:
This lens work very nice, I use it for photograhpy in nature and at night, but it is also very usefull indoor. The autofocus is a little slow and the lens a little hevy, but it do not affect the handling.
Pros
- Consistent Output
- Easily Interchangeable
- Quick Focus
- Rugged
- Sharp Focus
- Strong Construction
Cons
- Heavy
Best Uses
- Landscape Photography
- Upgrade
Comments about Sigma 20mm f/1.8 (D) EX Aspherical DG DF RF AF Lens:
Excellent lens for wide angle pictures! I use it on a Sony Alpha 900. Takes great pictures and is easy to attach and remove.
- Recommended:
- Hoya 82mm Ultraviolet UV(0) Haze Glass Filter
Displaying reviews 1-4
Filters & Filter Kits
- Price: $48.00
- Price: $102.00
Hoods & Covers
- Price: $39.95
Cases & Wraps
-
- Original: $16.95
- Save: $1.69
- Price: $15.26
What's in the Box
- Front & Rear Caps
- Lens Hood
- Case
- 1-Year Worldwide Warranty + 3-Year Extended USA Warranty
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