Tamron 17-35mm f2.8-4 LD is an Auto Focus (AF)
Wideangle Zoom lens with 35mm FF max sensor coverage and it is designed to be used with Canon EF mount cameras.
Lens Mount
Tamron 17-35mm f2.8-4 LD is compatible with cameras that have
Canon EF lens mount. Some of the latest released cameras with Canon EF lens mount are
Canon 1D X III,
Canon 6D MII and
Canon 5D MIV.
Sensor Coverage
Max sensor coverage of Tamron 17-35mm f2.8-4 LD is
35mm FF.
Focal Range
Tamron 17-35mm f2.8-4 LD has a focal range of 17-35mm and 2.1X zoom ratio. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides an 35mm (FF) equivalent of 27.2 - 56mm.
Optical Image Stabilization
Tamron 17-35mm f2.8-4 LD 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 17-35mm f2.8-4 LD is available in Black color.
Zoom Method
Tamron 17-35mm f2.8-4 LD 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.
Aperture
Tamron 17-35mm f2.8-4 LD is a variable aperture lens with a max aperture of f2.8 and a minimum aperture of f22 at 17mm, and a max aperture of f4 and minimum aperture of f22 at 35mm .
Optical Formula
Tamron 17-35mm f2.8-4 LD's optical formula consists of 14 elements in 11 groups. Following special elements are used in this design:
- 3 hybrid aspherical elements
- 1 LD element