Tamron 28-300mm XR Ultra Zoom
with New Super Hybrid Mount
Compared With Conventional Brass Mount
In Previous 28-300 Model
The bayonet mount on the new 28-300mm XR Ultra Zoom (model A06) from Tamron uses hybrid materials made of stainless steel and engineering plastic. Tamron originated the SUPER HYBRID MOUNT by developing an innovative injection molding technology to create this entirely new material that achieves remarkable reduction in weight while providing excellent strength-equal to that of the metallic (brass) material conventionally used for the mount portion of a lens.
Some lenses made by Tamron, other independent lens manufacturers, and camera makers use engineering plastic material to produce the lens mount. However, there are cases of damage to the mount when it suffers excessive shock. Therefore, Tamron avoids using engineering plastic for mounts on lenses mainly intended for the professional and serious amateur photographer who requires a heavy-duty mount.
The newly developed SUPER HYBRID MOUNT by Tamron solves this problem. The Super Hybrid Mount is very strong since the engineering plastic material, in which a stainless steel plate is embedded, is injection-molded simultaneously. Furthermore, the stainless steel plate is designed to extend to the flange portion of the mount, which is the important connecting point between the lens and the camera. Tamron's new 28-300mm XR Ultra Zoom is the first lens to incorporate the remarkably strong Super Hybrid Mount.
Cut-Away Drawing
Another benefit of this new mount is its weight. The Super Hybrid Mount is more than 70% lighter when compared with the same mount portion made of brass on Tamron's previous 28-300mm zoom lens (model 185D). The weight distinction is so great that you can literally feel the difference when you hold the two mounts in the palm of your hand.
Brass mount in 28-300mm Model 185D
Weight: 27.22 grams (.96 ounces)
Super Hybrid Mount in Model A06
Weight: 7.38 grams (.12 ounces)
The Super Hybrid Mount is one of several reasons why the new Tamron AF28-300mm XR Ultra Zoom is 164.42 grams (5.8 ounces) lighter that the previous model (185D).
TAMRON
www.tamron.com
