Tamron’s has announced a high-power zoom for Sony’s NEX-series – the 18-200mm F/3.5-6.3 Di III VC (Model B011).
The image-stabilised lens has exactly the same nominal specifications as Sony’s own zoom. The angle of view is 27-300mm when converted to 35mm format.
It weighs 460g, uses 62mm filters, and has VC (Vibration Compensation). The metallic lens barrel exterior is available in two colors: black and silver. A newly constructed stepping motor allows contrast-detection AF during video shooting. Direct Manual Focus (DMF) allows the user to make fine manual adjustments in the AF focus.
Di III (Digitally integrated design): A new designation Tamron gives to lenses engineered specifically for mirrorless interchangeable-lens cameras with no internal mirror box or pentaprism, adopting an optical design that matches the characteristics of the digital camera.
The result of this development is a lens that is compact and lightweight, featuring a 62mm filter diameter and weighing only 460g. The lens is available in silver and in black.
Tamron’s VC mechanism employs a three-coil system, electromagnetically moving the VC group via three steel balls. The VC lens elements are held in place only by contact with the steel balls, achieving smooth movement with little friction. This provides a stable viewfinder image with excellent tracking performance that eliminates the blur from handheld shots for cleaner, crisper shots.
Tamron’s earlier VC unit has a moving magnet system with heavy magnets in the vibration-compensating lens. However, the new VC mechanism adopts a lightweight moving coil system that reduces the load on the drive system. This allows the drive to be operated with smaller coils and magnets, reducing the weight and size for the entire VC unit. In addition, improvements to software and other elements of the VC mechanism used in the 18-200mm Di III VC have made the mechanism even quieter.
Specifications 18-200mm F/3.5-6.3 Di lll VC (Model B011)
- Focal length: 18-200mm
- Maximum aperture: F/3.5-6.3
- Angle of view3: (diagonal) 76˚ 10´-8˚ 03´
- (Horizontal) 66˚ 16´-6˚ 43´
- (Vertical) 46˚ 51´-4˚ 27´
- Lens construction: 17 elements in 13 groups
- Minimum focus distance: 0.5m (throughout zoom range)
- Maximum magnification ratio: 1:3.7 (at f=200mm: MFD 0.5m)
- Filter size: φ62mm
- Length4: 96.7mm
- Entire Length5: 102.0mm
- Diameter: φ68mm
- Weight: 460 g
- No. of diaphragm blades: 7
- Minimum aperture: F/22 – 40
- Standard accessories: Flower-shaped lens hood (included)
- Compatible mounts: Sony E-mount
The angle of view of the lens when used for video on the Sony digital HD video camera recorder NEX-VG10 is 32.4 – 360mm when converted to the 35mm format.
Due to an inherent characteristic of this TAMRON lens, the resulting image in the LCD monitor may be displayed in a “pumping” manner in the continuous operation of the focus search function when using the Sports Action mode on Scene Selection. The actual images captured will NOT be affected by this circumstance. In other Shoot Modes (P, A, S, M), when the focus mode is set to Continuous AF (AF-C), the same condition may also arise. The actual images captured will also NOT be affected by this circumstance.
As an alternative to the above settings, you can change the focus mode to Single-shot AF (AF-S) or Direct Manual Focus (DMF).
This lens was developed, manufactured and will be sold based on the specifications for the E-mount that was disclosed by Sony Corporation under Tamron’s license agreement with Sony Corporation
Price: The suggested retail price is yet to be announced. Availability: Early 2012. Exact date to be announced.