Tamron announced the final details and availability of its 18-300mm F/3.5-6.3 Di III A VC VXD For Fujifilm Xmount and Sony E Mount, previously revealed in July as a development announcement.

This lens, as mentioned in the original announcement of development, will be Tamron’s first Fujifilm X-Mount lens.

Tamron claims the 18-300mm f/3.5-6.3 is the first 16.6x all-in-one lens for APS-C. It has a full-frame equivalent focal length range from 27mm to 450mm, with a minimum object depth of 5.9 inches at the wide end and a magnification ratio equal to 1:2.

Tamron’s VXD linear motor focused mechanism allows the lens to achieve an autofocus speed of 0.3 seconds and precision that is among the most impressive in its class. Tamron claims that the autofocus performs well across the zoom range. It is excellent for tracking moving subjects and is suitable for animals, trains, aircraft and other moving objects. It is also a linear motor so it is fast and quiet.

Tamron claims the 18-300mm f/3.5-6.3 zoom lens for APS-C mirrorless cameras is the best in terms of image quality. Tamron claims that the lens has a well-balanced array of elements to ensure a high zoom ratio of 16.6x and excellent image quality.

The lens is composed of 19 elements, in 15 groups. It also includes three aspherical and four low-dispersion elements. Tamron claims that these elements together suppress optical aberrations. According to Tamron, the lens maintains high resolution power throughout the zoom range. It features a 7-bladed circular diaphragm with a 67mm front size filter.

Below is a collection of images taken by Tamron with the lens on a Sony A6600.

Tamron will release both the 18-300mm f/3.5-6.9 Di III-A VC XD for Sony E-mount as well as Fujifilm XMount at different times. The Sony E-Mount version of the 18-300mm f/3.5-6.3 Di III-A VC VXD will be available in September, while the Fujifilm X-Mount version should arrive on October 28. Tamron warns that these timelines may change due to the global healthcare crisis. Both versions will be $699.