Sigma’s second-generation 17-35mm f/2.8-4 EX AF features dramatically improved close-up performance (maximum magnification ratios go from 1:11.5 to 1:4.4). It also boasts an advanced ring-type HSM AF motor, one noticeably quieter than Sigma’s previous micro-type; you can now manually touch up focus while working in AF. The cost of this advance? Added weight (19.8 ounces compared to 14 ounces) and a $50 hike in the street price. Covering a 35mm frame, this lens is optimized for use on DSLRs thanks to new multicoatings to suppress reflections that bounce off digital sensors.
HANDS ON:
The lens is somewhat large for its class (in fact, its weight and dimensions are almost identical to Canon’s fixedaperture 16-35mm f/2.8), and finished in Sigma’s newly improved EX surface, which eliminates tiny gold and silver flecks that looked like dust in some photos of previous EX lenses. The new surface is still slightly textured, but now it’s a uniformly sleek matte black. Focusing, depth-of-field, and zoom scales are in white and easily legible. Zoom and focusing rings are amply large and covered with a ribbed, rubberized material. The manual-focus ring turns smoothly and evenly, with a pleasing drag, but the zoom action grows stiffer as you rack the lens out. Unlike most zooms, this lens’ focusing collar is significantly wider than its zoom — a feature manual-focus fans should applaud.
IN THE LAB:
SQF performance showed excellent sharpness at all tested apertures and focal lengths. According to DxO Analyzer tests, the lens has slight barrel distortion at 17mm (0.83%) and 24mm (0.62%); and minimal barrel distortion (0.45%) at 35mm; an above-average, even excellent performance. Light falloff at the edges was gone by f/5.6 at all apertures, also above average. At the universal close-focus distance of 10.8 inches, magnification ratios ranged from 1:10.2 at 17mm to a satisfying 1:4.4 at 35mm.
CONCLUSION:
In our opinion, the lens’ forte is its close-up performance, a welcome development in the ultrawide-angle zoom category. If you want dramatic closeups from a wide-angle zoom, and a minimum of linear distortion, you’ll be pleased with this new Sigma.
Specifications
17-35mm (17.62-33.66 tested), f/2.8-4 (f/2.75-4.18 tested), 16 elements in 13 groups. Focusing turns 130 degrees counterclockwise. Zoom ring turns 50 degrees counterclockwise. Focal lengths marked at 17-, 20-, 24-, 28-, and 35mm.
Em bên Canon trước đi tìm zoom ultrawide. Có dùng qua 10-20sigma thấy chất lượng không thể hoàn hảo hơn với giá tiền bỏ ra. Nên suy đoán Sigma 17-35 trên FF cũng sẽ có chất lượng tương tự. Nhưng đi test của 1 thợ trên xóm thấy chụp lên soft bét nhè. Từ đó mất tin tưởng Quality Control của Sigma. Nếu bác có mua mới cũng phải test kĩ. Thôi thì trở lại với Tamron, ảnh nét em dùng 3 con như nhau cả 3.
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- Được gửi bởi hoy
Em xin lỗi các bác vì hỏi rồi bỏ top, do công ty đi du lịch. Con Tamron 17-35 thì em thấy chất ảnh cũng khá. nhưng do len cũ mua lại xài một thời gian cũng hơi chán. Em muốn 1 em mới toanh. Sigma về giá tiền em thấy bán cao hơn chút, nên quan tâm tới chất lượng. Còn Tokina thì em nghe nói hãng này chỉ được con len 11-16 (DX) còn lại không tốt. Hok biết con 16-28 có bác nào xài chưa, cho em tham khảo vài ảnh. The Sigma 17-35mm f/2.8-4 EX DG HSM Lens review page is included for access to the ISO 12233 Crops and Vignetting results. I do not plan to review the Sigma 17-35mm f/2.8-4 EX DG HSM Lens at this time. Bringing you this site is my full-time job (typically 60-80 hours per week). Thus, I depend solely on the commissions received from you using the links on this site to make any purchase. I am grateful for your support! - Bryan My Recommended Sigma 17-35mm f/2.8-4 EX DG HSM Lens Retailers The Tip Jar Lenss > Sigma 17 35mm F28 4 EX DG Aspherical HSM Canon > Lens Test Results First of all, let’s take a look at the results for the Sigma lens by itself:
Sigma 17-35mm F2.8-4 EX DG Aspherical HSM Canon mounted on a Canon EOS 1Ds Mark III
With a DxO Mark Score of 20, this wide-angle zoom is indeed a good-quality lens.Comparison
Sigma 17-35mm F2.8-4 EX DG Aspherical HSM Canon vs Canon EF 16-35mm f/2.8L II USM mounted on a Canon EOS 1Ds Mark III
Both lenses achieve the same DxOMark overall score of 20. When looking at the results a bit more closely, the Sigma’s quality seems actually somewhat lower (see also the DxOMark score map). In fact, the Sigma’s performance drops off a bit for the greatest focal lengths (starting at 28 mm), due to the fact that the Sigma doesn’t maintain a constant f/2.8. To compensate for the loss of brightness, one must augment the ISO sensitivity – and consequently, noise goes up as well.Sigma 17-35mm F2.8-4 EX DG Aspherical HSM Canon
The advantages The disadvantages Homogenous sharpness in the field at maximum aperture An aperture that varies depending on the focal length Good correction of chromatic aberrations Very heterogenous optical quality A truly affordable lens in terms of price
Canon EF 16-35mm f/2.8L II USM
The advantages The disadvantages Homogenous optical quality Good sharpness only in the first third of the field With a constant aperture, the Canon is brighter Very strong chromatic aberrations chromatiques in the corners at 16mm High price
Conclusion
The Sigma 17-35mm F2.8-4 EX DG Aspherical HSM Canon is a very good lens for the price. While each lens has its strong and weak points, the Sigma quite frankly manages to hold its own against its pricier Canon rival.