Mechanism Design

• Lightweight, easy-to-hold tripod mount with Arca-Swiss-compatible quick-release plate

  A tripod mount compatible with Arca-Swiss style quick release plates can be easily attached and detached and are renowned for their excellent stability. And because the tripod mount is made of lightweight and robust magnesium alloy, it is much easier to carry. Using a tripod makes the lens more stable, as opposed to attaching a tripod to a camera body to prevent blurred images. And since this tripod mount allows the camera body to rotate freely without moving its axis, adjusting composition is easy.

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• The end of the included lens hood is protected with flexible, shock-absorbing front rim to prevent cracks and damage

  TAMRON emphasized usability for outdoor shooting. The end of the included lens hood is protected with flexible, shock-absorbing front rim to prevent cracks and damage.

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• Hood locking mechanism prevents unintentional detachment

  The lens hood is equipped with a locking mechanism, which prevents detachment due to unintentional contact during use.

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• An internal zoom provides stability by minimizing changes to the center of gravity while shooting

  An internal zoom provides stability by minimizing changes to the center of gravity while shooting. Since the total length of the barrel never changes while zooming, you can easily shoot through obstructions such as wire fencing.

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• Leak-resistant seals throughout the lens barrel help protect your equipment when shooting outdoors

  For greater protection when shooting outdoors, leak-resistant seals throughout the lens barrel help protect your equipment.

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• This mechanism quickly locks or unlocks the zoom at any position by sliding the zoom ring

  This mechanism quickly locks or unlocks the zoom at any position simply by sliding the zoom ring. Photographers can shoot from any angle without the zoom extending unintentionally.

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• Zoom Lock switch prevents undesired extension of the lens barrel when carrying the camera/lens unit on a neck strap

  Zoom Lock switch prevents undesired extension (creep) of the lens barrel when carrying the camera/lens unit on a neck strap. This enhances responsiveness in the field and helps protect the lens.

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• Polycarbonate is the material used whenever TAMRON produces high-precision components that require the strength to withstand rigorous use

  To insure the highest levels of performance and durability without adding additional weight, For example, TAMRON all-in-one zoom lenses make extensive use of engineering plastic (polycarbonate) materials in many critical mechanical components of the lens. Indeed, polycarbonate of this caliber is the material of choice whenever we produce high-precision components that require the strength to withstand rigorous use.

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• Multiple-Cam Zoom Mechanism incorporates several precision cams cut into a single cylindrical surface using high-tech automated machinery

  Multiple-Cam Zoom Mechanism is an original TAMRON design that incorporates several precision cams cut into a single cylindrical surface using high-tech automated machinery. This key component enables zoom lens barrels to be extended and retracted effortlessly, achieving commendably compact dimensions at the wide-angle settings, while holding precise extension at telephoto settings.

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• Dynamic Rolling-cam mechanism operates the heavy focusing unit of the fast-aperture with high speed and accuracy

  Thanks to Dynamic Rolling-cam mechanism, which operates the heavy focusing unit with high speed and accuracy, TAMRON has succeeded in minimizing the drive load placed on the focus lens component. This breakthrough ensures stable AF operating performance and improves reliability even under the harsh shooting conditions of professional use, including high and low temperature extremes.

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