![]() This lens is only available with two mounts: Canon EF and Nikon F. A 1.4x tele-converter, which matches the optics of the 100-400mm lens, extends the zoom range to 140-560mm.ĭust and moisture resistant sealing, robust construction and light weight make the Tamron 100-400mm zoom ideal for shooting outdoors in challenging conditions. Other accessories include the Tamron TAP-in Console which provides a USB connection to a computer for installing firmware updates and customising fine adjustments to autofocusing and VC controls. However, we could only find a couple of local re-sellers who stocked it. An optional tripod mount (Model: A035TM) compatible with Arca-Swiss style quick release plates is available for an RRP of AU$199. The lens is supplied with front and end caps plus a deep, cylindrical lens hood that adds roughly 70 mm to the shooting length and reverses over the lens barrel for storage. The proprietary VC system is CIPA rated for four f-stops of shake compensation. Tamron’s Dual MPU (Micro-Processing Unit) system, which is also used in the 70-210mm f/4 lens, dedicates one microprocessor to lens system control (including AF), and the other for vibration compensation processing. The iris diaphragm remains almost perfectly circular up to two stops down from maximum aperture. At 400mm, the constant f/6.3 maximum aperture can produces attractive bokeh in close-up shots. ![]() Zooming in to the MOD (Minimum Object Distance) of 1.5 metres results in a maximum magnification ratio of 1:3.6.Īutofocusing is driven by a USD (Ultrasonic Silent Drive) motor, which is fast, quiet and precise. (Source: Tamron.)įocusing is internal, although zooming from 100mm to 400mm extends the inner barrel by almost 70 mm, rotating the front of the lens through approximately 45 degrees. This diagram shows the positions of the main seals that exclude moisture and dust. The barrel of the Tamron lens is made primarily of magnesium, enabling it to be claimed as the lightest in its class. Both lenses are designed for cameras with ‘full-frame’ sensors and both are available in Canon EF and Nikon F mounts. With respect to size, price and value, the Tamron 100-400mm f/4.5-6.3 Di VC USD lens is highly competitive with its current rivals.Īnnounced in October 2017, the Tamron 100-400mm f/4.5-6.3 Di VC USD lens was released roughly six months after Sigma launched its slower and heavier 100-400mm f/5-6.3 OS Contemporary lens covering the same zoom range. This can be handy when shooting close-ups at wide lens apertures. The f/4.5-6.3 maximum aperture range, which is similar to that of competing lenses, provides some flexibility for shooting in low light levels as well as control over depth of field. The shorter focal lengths could also work for head-and-shoulders portraiture or environmental portraiture when there’s sufficient distance between the subject and the (blurred) background. The robust construction should appeal to photographers who work extensively in outdoor locations. The 100-400mm zoom range is ideal for sports and wildlife photography and the comparatively light weight of this lens and its 4-stop stabilisation make hand-held shooting possible, although a lens of this type usually fares better when tripod-mounted.
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