17-35mm F2.8-4.0 Tamron Lens

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Specs

15 elements in 10 groups
Min aperture - F16-F22
7 diaphragm blades
Shortest shooting distance: 0.28 m
Maximum magnification: 1: 4.9
Filter diameter: 77 mm
Internal focus
Size: 83.6 mm × 92.5 mm (For Canon)
Weight: 460 g
Comes with lens hood
Canon EF and Nikon F mounts
Available in September (for Nikon), price at $599, preorder at
- https://www.bhphotovideo.com/c/product/1428194-REG/tamron_a037_17_35mm_f_2_8_4_di_osd.html

PR

Optimum image quality coupled with maximum portability

The 17-35mm F/ 2.8-4 Di OSD (Model A037) is an ultra-wide-angle lens featuring superb image quality integrated into a compact, lightweight body. The use of specialized glass materials enables comprehensive control of the axial chromatic aberrations conspicuous in ultra-wide-angle lenses. The Model A037 offers a high level of sharpness and contrast comparable to the very best of lenses. From the 35mm standard wide-angle for user-friendly snapshot photography, to the ultra-wide-angle 17mm used for professional landscape photography, this lens can meet a wide variety of your needs and yet still offer amazing portability being only 90mm (3.5 in) in length, 83.6mm in diameter, and just 460g (16.2 oz) in weight. With a Minimum Object Distance (MOD) of only 0.28m (11 in), opening the aperture while approaching the subject lets you blur the background. Wide enough to encompass the entire landscape, the Model A037 lets you capture the thrill of the moment in each and every image you shoot.

Backlighting control enables new forms of expression

As strong light sources can often penetrate the lens, wide-angle lenses in particular are made to resolve backlighting issues. The Model A037 has gone through repeated comprehensive ghosting analysis simulation during the development stage. The optical structure performance level has also been maximized. The BBAR (Broad-Band Anti-Reflection) Coating is applied for highly effective anti-reflection and ghosting and flare are brought under control.

AF to capture the moment

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.

Additional Features

Protect your lens with Fluorine Coating and Moisture-Resistant Construction

The front surface of the lens element is coated with a protective fluorine compound that is water- and oil-repellant. The lens surface is easier to wipe clean and is less vulnerable to the damaging effects of dirt, dust, moisture and fingerprints. Leak-proof seals throughout the lens barrel further protect your equipment, especially when shooting outdoors.

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PDF

https://drive.google.com/file/d/1wG8_avyFb4yiVxdMxGc0SIjlb5A5bF9S/view

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Release date - August 6, 2018
Approximate price - 78,300 yen including tax, or around $700 USD in japan
Us price can be as low as $499
September 4 shipping for Nikon version.

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US PR

August 6, 2018, Commack, New York--- Tamron announces the launch of a new ultra-wide-angle zoom lens, the 17-35mm F/2.8-4 Di OSD (Model A037), for 35mm full-frame DSLR cameras. The vision behind the Model A037 is that of an ultra-wide-angle zoom lens that has a separate concept from SP 15-30mm F/2.8 Di VC USD (Model A012), with superb image quality and easy portability. At just 3.5 in in length and 16.2 oz. in weight, it is the smallest and lightest in its class. The focal length ranges from an ultra-wide 17mm that is suitable for professional landscape photography to a standard 35mm perfect for snapshot photography. As for F-stops, the wide-angle end is a large aperture F/2.8, and at the telephoto end is a fast F/4. The Moisture-Resistant Construction and Fluorine Coating help to enhance the user's photographic experience. For those looking to try out an ultra-wide-angle zoom lens for the first time, as well as having a lens that is easily portable, the A037 is the definitive choice. The lens will be available in Nikon mount on September 4, 2018 at a suggested retail price of $599. The launch of the Canon mount model will be announced at a later date.

PRODUCT HIGHLIGHTS

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 can occur 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 11 in., so background blurring is still possible when opening the aperture and approaching the subject close-up with this ultra-wide-angle zoom.

Advanced coating technology along with proprietary ghosting analysis simulation technology enabled the high level of backlighting control

Resistance to backlighting is extremely important for wide-angle lenses as they are often subjected to strong light sources. The Model A037 has a high level optical construction that repeatedly employs comprehensive ghosting analysis simulation. The BBAR (Broad-Band Anti-Reflection) Coating is highly effective in reducing reflection, allowing ghosting and flare throughout the entire zoom range to be 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 quiet operation. Through the innovative optimization of the system that includes AF system speed reduction gear, Tamron could greatly reduce the drive noise in comparison to conventional AF types with built-in DC motors. AF performance and speed have also been vastly improved. Thus, even if silence is required, AF can be employed without having to worry at all about noise creation. The Model A037 can 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.

5. Moisture-Resistant Construction

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.

6. Fluorine Coating

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.

7. Compatible with TAMRON TAP-in Console, an optional accessory

The new A037 is compatible with the optional TAMRON TAP-in Console, 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.