Tamron 17-35mm f/2.8-4 Di OSD Lens - Canon
- High-performance imaging for shooting vast landscapes in sharp detail
- Advanced coating technology along with proprietary ghosting analysis simulation technology enabled the high level of backlighting control
- OSD (Optimized Silent Drive) enables both excellent AF speed and drive noise reduction
- Circular aperture to produce a smooth-edged bokeh
- Moisture-Resistant Construction
- Fluorine Coating
- Compatible with TAMRON TAP-in ConsoleTM, an optional accessory
High-performance imaging for shooting vast landscapes in sharp detail
The optical construction (15 elements in 10 groups) uses four LD (Low Dispersion) lens elements to minimize axial chromatic aberrations that are normally seen with ultra-wide-angle zoom lenses. With two properly positioned GM (Glass Molded Aspherical) lenses, distortion and other aberration can be satisfactorily corrected as well. Being the smallest and lightest in its class* and dedicated to high quality imaging, the engineers have paid particular attention to size. The lens has also been carefully designed to allow peripheral point image reproducibility and thereby facilitate a high degree of sharpness and contrast. 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 opening the aperture and approaching the subject close enough with this ultra-wide-angle zoom.
Advanced coating technology along with proprietary ghosting analysis simulation technology enabled the high level of backlighting control
Controlling the backlit effect is extremely important for wide-angle lenses as they are often subjected to catch strong light sources. The Model A037 has a high level optical construction that is based on a repeated comprehensive ghosting analysis simulation during the development stage. The BBAR (Broad-Band Anti-Reflection) Coating is highly effective in reducing reflection, therefore allows ghosting and flare throughout the entire zoom range to be well controlled.
OSD (Optimized Silent Drive) enables both excellent AF speed and drive noise reduction
The AF drive system employs an OSD (Optimized Silent Drive) to ensure silent operation. Through the innovative optimization of the AF system, particularly the system includes speed reduction gear, Tamron was able to greatly reduce the drive noise in comparison to conventional AF unit with built-in DC motors. AF performance and speed have also been vastly improved. Thus, even if where silence is required, AF can be employed without having to worry at all about noise. The Model A037 is able to provide superlative AF precision for exact focus even when shooting moving objects, as well as outstanding trackability.
Circular aperture to produce a smooth-edged bokeh
A 7-blade diaphragm is configured to retain a smooth, circular-shaped aperture opening even when stopped down by two stops from the wide-open aperture. This produces a smooth-edged bokeh in background light spots and avoids rugged aperture geometry.
Seals are located at the lens mount area and other critical locations to prevent infiltration of moisture and/or rain drops to provide Moisture-Resistant Construction. This feature affords an additional layer of protection when shooting outdoors under adverse weather conditions.
The surface of the front element is coated with a protective fluorine compound that has excellent water- and oil-repellant qualities. The front surface is easier to wipe clean and is less vulnerable to the damaging effects of dirt, dust, moisture or oily fingerprints, allowing for much easier maintenance. The coating also provides an enhanced level of durability, and will sustain its effectiveness for years.
Compatible with TAMRON TAP-in ConsoleTM, an optional accessory
The new A037 is compatible with the TAMRON TAP-in Console (Model TAP-01), an optional accessory product that provides a USB connection to a personal computer, enabling users to easily update a lens’s firmware as well as customize features including fine adjustments to the AF.