Tamron SP 90mm F/2.8 Macro Di VC USD
A new level of craftsmanship for a new experience
A legacy of superior optical performance in 1:1 lifesize photography reaches a new plateau with enhanced VC functionality and advanced features
The SP 90mm F/2.8 Di MACRO 1:1 VC USD (Model F017) is the most recent release in a successful line of Tamron SP 90mm macro lenses. It redefines the best in advanced features and succeeds a legacy of superior optical performance.
XY-Shift compensation has been newly added to reinforce VC functionality, further improving image stabilisation capabilities at any shooting distance from infinity to macro. Advancements in USD control software have also increased AF focusing speed and optimally fine-tuned for various framing conditions.
Furthermore, a high standard of Moisture-Proof and Dust-Resistant Construction has been added to prevent intrusion of dust or water droplets. Highly durable Fluorine Coating is applied to the top element surface and efficiently prevents condensation of moisture and repels smudge-causing substances.
Meticulous craftsmanship is demonstrated in every detail of the exterior design of the newly transformed SP 90mm macro lens. Feel it in the exquisitely smooth texture of the metallic barrel.
Outstanding depictive capabilities and anti-reflection efficiency
The lens features an optical construction of 14 elements in 11 groups, including one LD (Low Dispersion) and two XLD (eXtra Low Dispersion) glass elements that in consonance help to control lateral and on-axis chromatic aberrations at a very high level of performance. A Floating System works in tandem with the optical construction to efficiently compensate for inherent aberration changes subject to varying distances. Therefore, this lens ensures seamless and outstanding depictive capabilities across the entire shooting range – close or far.
Flare or ghosting can be detrimental to a decisive shot. A combination of 2 types of coating – eBAND (Extended Bandwidth & Angular-Dependency) layered on top of BBAR (Broad-Band Anti-Reflection) – dramatically improves anti-reflection efficiency to deliver flawless, crystal clear images even against harsh beams of sunlight.
Commitment to extending a legacy of bokeh with elegance
Tamron has maintained a reputable standard for generations of 90mm macro lens models – all the way from manual focus lenses to the current AF models – for their exceptional depictive quality with spectacular bokeh. We also set a high standard to keep pace with the upward migration of digital cameras with advanced technical features and high pixel density.
We have now balanced these polar traits at a higher level: raising resolution performance to a new standard of sharp images, while rendering a soft and smooth transition in gradation of blur-effect in background objects. Optical simulations were thoroughly conducted to realise both well-tuned bokeh effects, while minimising disturbance in dual-line smear of linear-shaped objects naturally blended into the overall bokeh effect.
The result: the SP 90mm F/2.8 MACRO VC sustains the tradition of excellence in optical design while extending the limit in cutting-edge optical performance and beautiful bokeh.
Optimally tuned USD actuator for macro photography with manual override for instantaneous focus control
The USD (Ultrasonic Silent Drive) control software has been optimised for macro photography with increased focusing speed and positional accuracy when shooting in close-up settings. The AF drive responds rapidly yet quietly to zero in on the photographer’s point of interest and the Manual Focus Override enables instant shift in focus when necessary.
High-performance features behind every design aesthetic
Our attention to every engineering detail has yielded the most advanced optical and electro-mechanical design featured in the newest Tamron SP lenses, culminating in a new benchmark for high performance and visual elegance.
The design philosophy is based on human touch and is an integral factor in macro photography. The newly designed all-metallic barrel features an embedded concave ring at the base of the lens – for a firm hold and comfort necessary for a steady shot.
Switches are larger and reconfigured for smoother torque and the typeface has been redesigned for intuitive legibility.
* The Sony mount does not include VC, as Sony digital SLR bodies include image stabilisation functionality. The Sony lens is designated as “SP 90mm F/2.8 Di Macro 1:1 USD”.
*** The diaphragm retains a nearly circular shape at aperture settings down to f/5.6.
1:1 Maximum magnification ratio
The powerful maximum magnification ratio of 1:1 reproduces a life-size image of the subject on the image sensor. The Tamron 90mm Macro captures a minute world with a level of crisp detail that cannot be easily seen by the naked eye.
Stabilises camera blur for sharp images in low light
If you’re shooting handheld when light is low, especially with longer lenses, your camera’s shutter speeds can extend to a point where the image may turn out blurred due to camera shake. Tamron’s VC tracks this shake and neutralises it for sharper images without the inconvenience of a tripod or the artificiality of a flash, in much lower light.
Tamron’s unique VC mechanism uses a proprietary actuator and algorithms to deliver an extremely stable viewfinder image with excellent tracking. The tri-axial system uses three driving coils to move internal optical components within the VC lens electromagnetically, based on signals originating from three ball bearings, made from either steel or ceramic. The VC lens elements are held in place only by contact with the balls, achieving smooth movement with minimal friction.
Tamron’s original moving magnet system employed a heavy magnet positioned near the moving VC lens element. The improved VC reverses the positions of magnet and coil and attaches the VC optic to the coil. This moving coil is lighter than the magnet, and as this reduces the load on the drive system, both the VC unit and the lens are lighter and more compact.
* From a focus distance of 3 metres the benefits of VC gradually decrease as the focus distance becomes closer.
Ultrasonic Silent Drive
‘Travelling waves’ generate a fast, smooth AF movement
This extremely quiet motor is ideal for photography of events, weddings, theatre or musical performances, as well as crucial moments on the golf course – any situation where autofocus noise is obtrusive. Major improvements in autofocus response and tracking ability over standard DC motors make for instantaneous focusing and spontaneous shooting of rapidly moving subjects.
Tamron’s USD works with the high-frequency ultrasonic vibrations that are produced by a ring called a ‘stator’. Energy from the vibrations is used to rotate an attached metallic ring known as the ‘rotor’. Piezoelectric ceramic is a material that produces ultrasonic vibrations when voltage of a specific frequency is applied is arranged in a ring formation on the stator. This electrode configuration of piezoelectric ceramic causes two ultrasonic vibrations to occur in the stator. By effectively combining these two ultrasonic vibrations, it is possible to convert the energy from the vibrations that produce simple motion into energy known as ‘deflective travelling waves’, which move around the circumference of the ring. The friction between these deflective travelling waves created on the metallic surface of the stator and the surface of the rotor produces force, causing the rotor to rotate. Attached to the rotor is the focusing lens, which is given a fast, smooth autofocus movement.
Focusing elements inside the optical design make for better handling
In many lenses, the front elements move back and forth to alter the focus distance. With an internal focusing (IF) mechanism, the focusing elements are inside the optical design. Because the front lens elements remain static, the lens’ actual length does not change. This provides several benefits both to the image and during photography:
- The barrel is not subject to stray light entering from external helicoids that can adversely affect image quality
- A non-rotating front filter thread makes it easier to use filters such as graduated filters and polarisers
- A flower-shaped lens hood will remain in the correct position to most effectively shield the lens from stray light
- Better balance and more predictable handling because the lens length does not change during focusing
- Improved optical performance by minimising loss of illumination at the corners of the image field (vignetting)
- Suppression of other aberrations that become more troublesome at different focusing positions.
Moisture-proof and dust-resistant construction and fluorine coating for outdoor shooting
A high standard of moisture-proof and dust-resistant construction prevents intrusion of dirt, dust, or water droplets. In addition, fluorine coating has been applied to the front element surface to repel water and oil, which is especially useful when shooting outdoors.
Fine manual focus adjustments can be made quickly and easily
The USD motor is complemented by DMF (Direct Manual Focus) to enable manual fine-tuning after autofocusing if and when necessary. No need to engage a switch – just gently rotate the focus ring on the lens.