Already popular with sports and wildlife photographers, Tamron’s 150-600mm supertelephoto zoom has been significantly upgraded in a new second-generation ‘G2’ model with changes both externally and internally.
Completely restyled with a new, sleeker look, the new SP 150-600mm f5.0-6.3 Di VC USD G2 will initially be available in the Nikon F and Canon EF mounts with a Sony Alpha mount version to follow. The new lens’s barrel is sealed to prevent the intrusion of dust and moisture, while a fluorine coating is used on the face of the front element to prevent the build-up of dirt and grease. The integrated tripod mounting bracket is now made of magnesium alloy to save weight and has an Arca-Swiss mounting plate. Also new is a ‘Flex Zoom Lock’ which enables the quick locking of the lens at any focal length by simply sliding the zooming collar.
On the inside, the G2 150-160mm has an optical construction comprising 21 elements in 13 groups. Three of these elements are low-dispersion (LD) types to reduce axial and transverse chromatic aberrations. Tamron’s ‘eBAND’ nano-structured multi-coating is employed to minimise internal reflections, the BBAR (Broad-Band Anti-Reflection) coatings are used to counter ghosting and flare.
Autofocusing is via a ring-type ‘Ultrasonic Silent Drive’ (USD) motor with a full-time manual override and a minimum focusing distance of 2.2 metres which, at 600mm, gives a maximum reproduction ratio of 1:3.9.
A nine-bladed diaphragm gives smoother out-of-focus effects and is electro-magnetically controlled (on both mount versions) for more precise aperture setting.
A updated version of Tamron’s ‘Vibration Compensation’ (VC) optyical image stabilisation is installed and offers up to 4.5 stops of correction for camera shake. Additionally, there are now three VC modes, including one designed for use when panning. The standard VC mode is configurable – to determine viewfinder priority – via the optional Tamron TAP-In Console.
While the new 150-600mm is a ‘Di’ lens – Tamron’s designation for the full-35mm sensor size – it can be used on ‘APS-C’ format cameras when the effective focal length becomes 233-930mm. If these focal ranges still aren’t long enough for you, Tamron has also developed two dedicated teleconverters for its new telezoom, with 1.4x and 2.0x magnification. The 1.4x versions gives a focal range of 210-840mm (326-1302mm on ‘APS-C’) while the 2.0x converter bumps it up to 300-1200mm (a massive 465-1860mm on an ‘APS-C’ D-SLR).
New Tamron distributor, TNS Connect, expects to G2 150-600mm lens to be available locally from the first week in October priced at around $2100. For more information visit www.tamron.com.au