Tamron 70-300mm f4-5.6 USD is an Auto Focus (AF)
Telephoto Zoom lens with 35mm FF max sensor coverage and it is designed to be used with Sony Alpha mount cameras.
Lenses in Sony Alpha Mount with Same Focal and Aperture Range
Lens Mount
Tamron 70-300mm f4-5.6 USD is compatible with cameras that have
Sony Alpha lens mount. Some of the latest released cameras with Sony Alpha lens mount are
Sony A99 II,
Sony A68 and
Sony A77 II.
Sensor Coverage
Max sensor coverage of Tamron 70-300mm f4-5.6 USD is
35mm FF.
Focal Range
Tamron 70-300mm f4-5.6 USD has a focal range of 70-300mm and 4.3X zoom ratio. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides an 35mm (FF) equivalent of 105 - 450mm.
Optical Image Stabilization
Tamron 70-300mm f4-5.6 USD doesn't have an optical image stabilization system so the only option to stabilize the image taken with this lens is to mount on a camera body with IBIS (sensor based In-body image stabilization).
Body Colour
Tamron 70-300mm f4-5.6 USD is available in Black color.
Zoom Method
Tamron 70-300mm f4-5.6 USD features
Rotary (extending) zoom method where the length of the lens changes as you zoom in or out. This makes it possible to design the lens with a smaller minimum length ( generally when it is zoomed out) compared to internal zoom lenses. The disadvantages of this design are being harder to seal against dust and moisture, weight balance shifting while zooming and zoom creep in certain lenses.
Maximum Magnification Ratio
Tamron 70-300mm f4-5.6 USD has a Max Magnification Ratio of
0.25x and has a minimum focusing distance of
1.5m.
Aperture
Tamron 70-300mm f4-5.6 USD is a variable aperture lens with a max aperture of f4 and a minimum aperture of f32 at 70mm, and a max aperture of f5.6 and minimum aperture of f45 at 300mm .
Optical Formula
Tamron 70-300mm f4-5.6 USD's optical formula consists of 17 elements in 12 groups.