Sigma 28 mm f/1.8 EX DG Aspherical Macro
11. Summary
- good image quality in the frame centre from f/2.8 aperture,
- low chromatic aberration,
- low distortion,
- quite good work against bright light,
- solid housing,
- minimal focus already from 20 cm,
- rich standard accessory kit,
- 3+2 years of guarantee.
Cons:
- very weak image quality near the maximum relative aperture,
- unacceptable performance at the edge of full frame practically at all aperture values,
- visible coma and high astigmatism,
- huge vignetting on full frame,
- noisy and unreliable autofocus,
- significant weight and dimensions.
The summary must be rather positive in the case. The lens will perform well as a standard lens on a small sensor. The problems is that when you own a reflex camera with such a detector you’d rather think about a Sigma 1.4/30 which is faster and its optical properties - better. Before the latest foreign currency turmoil you had to pay a bit over 1000 PLN for the model tested here; now, with the price significantly higher, its purchase, keeping the presence of a Sigma 1.4/30 in mind, is very disputable indeed.
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The fact that it was supposed to be used also on full frame was the Sigma’s 1.8/28 main advantage over the Sigma 1.4/30. Of course you can still attach it to that body but you shouldn’t expect high quality of image at the frame edge. The Sigma tested here simply can’t offer you that…
Sample shots:
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Camera: Nikon D3x Parameters: 28 mm, f/1.8, exp. 1/500 sec., ISO 200 File: JPEG, 6048×4032 pix, 7.61 MB |
Camera: Nikon D3x Parameters: 28 mm, f/2.8, exp. 1/200 sec., ISO 200 File: JPEG, 6048×4032 pix, 8.2 MB |
Camera: Nikon D3x Parameters: 28 mm, f/2.5, exp. 1/400 sec., ISO 200 File: JPEG, 6048×4032 pix, 7.32 MB |
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Camera: Nikon D3x Parameters: 28 mm, f/5.6, exp. 1/160 sec., ISO 400 File: JPEG, 6048×4032 pix, 8.56 MB |
Camera: Nikon D3x Parameters: 28 mm, f/4.0, exp. 1/160 sec., ISO 400 File: JPEG, 6048×4032 pix, 8.32 MB |
Camera: Nikon D3x Parameters: 28 mm, f/8.0, exp. 1/200 sec., ISO 100 File: JPEG, 6048×4032 pix, 6.66 MB |
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Camera: Nikon D3x Parameters: 28 mm, f/8.0, exp. 1/200 sec., ISO 100 File: JPEG, 6048×4032 pix, 7.78 MB |
Camera: Nikon D200 Parameters: 28 mm, f/2.8, exp. 1/1250 sec., ISO 100 File: JPEG, 3872×2592 pix, 3.57 MB |
Camera: Nikon D200 Parameters: 28 mm, f/5.6, exp. 1/200 sec., ISO 100 File: JPEG, 3872×2592 pix, 3.65 MB |
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Camera: Nikon D200 Parameters: 28 mm, f/5.6, exp. 1/200 sec., ISO 100 File: JPEG, 3872×2592 pix, 3.85 MB |
Camera: Nikon D200 Parameters: 28 mm, f/8.0, exp. 1/200 sec., ISO 100 File: JPEG, 3872×2592 pix, 4.13 MB |
Camera: Nikon D200 Parameters: 28 mm, f/8.0, exp. 1/200 sec., ISO 100 File: JPEG, 3872×2592 pix, 4.06 MB |
