Wide-angle photography just got easier
Creating high quality photos with ease gives you a whole new wide-angle perspective
The 17-35mm F/2.8-4 Di OSD (Model A037) is an ultra-wide-angle zoom lens that combines superb image quality with outstanding portability as the lightest and smallest size in its class.* It uses four LD (Low Dispersion) lens elements to minimize axial chromatic aberrations. And with two GM (Glass Molded Aspherical) lenses it cannot only provide the sharpness and contrast demanded by high-end lenses, it can also handle peripheral point image reproducibility. Furthermore, it has repeatedly gone through our proprietary ghosting analysis simulation employed to resist backlighting problems from strong light sources to which wide-angle lenses are often subjected. Along with an enhanced high level optical construction, the lens has BBAR (Broad-Band Anti-Reflection) Coating highly effective in reducing reflection and controlling ghosting and flare. The Minimum Object Distance (MOD) for the entire zoom range is a short 0.28m (11 in), so you can still enjoy the background blurring effect when shooting full open aperture and close-up with this ultra-wide-angle zoom. The Model A037 also has a circular aperture that gives you beautiful circular bokeh.
* Among ultra-wide-angle zoom lenses using an F-stop faster than F/4 for full-frame DSLR cameras. (As of July, 2018: Tamron)
The Model A037 was created to meet the demand for a lightweight, compact lens with high-level optical performance. This single lens covers a full range from ultra-wide angle 17mm for use in professional landscape photography to standard 35mm wide-angle for everyday snapshot photography. Yet it is only 90mm (3.5 in) in length, 83.6mm in diameter, and weighs in at only 460g (16.2 oz).
The AF drive employs a newly developed OSD (Optimized Silent Drive) to ensure silent operation. Upgraded and optimized for even further reduction in drive noise, this drive allows the lens to be used to your heart's content in all situations where silence is required. With its greatly enhanced quality and speed, the new outstanding AF performance and tracking capabilities mean you never have to worry about missing a shot even when focusing on moving subjects.
|Angle of View
|103°41'-63°26' <for full-frame DSLR cameras>
78°46'-43°29' <for APS-C format DSLR cameras>
|Optical Construction||15 elements in 10 groups|
|Minimum Object Distance||0.28m (11.0 in) Full zoom range|
|Maximum Magnification Ratio||1:4.9 (f=35mm)|
|Maximum Diameter||Φ83.6mm (3.3 in)|
|Length*||92.5mm Canon (3.6 in)
90.0mm Nikon (3.5 in)
|Weight||460g Canon (16.2 oz)
460g Nikon (16.2 oz)
|Aperture Blades||7 (circular diaphragm)**|
|Standard Accessories||Lens hood, Lens caps|
|Compatible Mounts||Canon EF mount, Nikon|
* Length is the distance from the front tip of the lens to the lens mount face.
** The circular diaphragm stays almost perfectly circular up to two stops down from maximum aperture.
Specifications, appearance, functionality, etc. may be changed without prior notice.
September 4, 2018 (Nikon)
October 2, 2018 (Canon)
Optical Construction (15 elements in 10 groups)
MTF (Modulation Transfer Function) curves describe to what extent the tested lens can faithfully reproduce contrast of the subject in images it captures.
The closer the 10 lp/mm (line pairs per millimeter) curve (the thick line for low frequency) in an MTF chart to "1" of the vertical axis (the higher up), the higher the contrast reproduction performance of the tested lens will be. The closer the 30 lp/mm curve (the thin line for high frequency) to "1" (the higher up), the higher the resolving power and thus the subjective sharpness of the lens will be.
Lens performance differs depending upon directions. Solid lines show performance in the sagittal (radial) direction while dotted lines indicate performance in the meridional (circumferential) direction. When sharp lenses capable of delivering uniform optical performance over the entire image field are tested, MTF charts show curves plotted in good balance.
Performance characteristics of photographic lenses cannot be expressed with only MTF charts. There are other factors that are expressed in different methods, such as taste of softness and degrees of compensation of various aberrations. But you can use MTF charts as a scale to measure lens performance.