Tamron AF 17-35mm f/2.8-4 Di LD Aspherical IF (Nikon) - Review / Lab Test Report
Lens Reviews - Nikon / Nikkor (APS-C)
Article Index
Introduction
Analysis

Special thanks to Dr. Michael Baier for providing and helping to test this lens!

Introduction

The Tamron AF 17-35mm f/2.8-4 Di LD Aspherical IF SP (again one of those Tamron names ...) is part of Tamron's pro grade SP (super performance) lens league. Regarding its Di (Digitally Integrated) designation Tamron claims to have optimized the lens to the special characteristic of today's image sensors. Nonetheless it is a full frame lens that remains perfectly usable on film SLRs. In the scope of this review we will have a look how the Tamron performs on the Nikon D200, an APS-C DSLR, where its field-of-view is equivalent to 25.5-52.5mm on classic cameras so the ultra-wide zoom gets roughly transformed to a standard zoom here.


Note: the product image above shows the Canon variant of the lens

The build quality of the lens is pretty decent but the finish doesn't quite feel as nice as Tokina AT-X or Sigma EX. As you can see in the product shot above the lens extends a little towards the long end of the zoom range. The front element does not rotate so using a polarizer is no issue. The broad zoom and focus rings operate pretty smooth but unfortunately the focus ring rotates in AF mode which feels a little substandard these days. The Nikon variant of the Tamron has no internal AF motor and relies on the slotted drive screw operated by the camera. Thanks to internal focusing (IF) the AF speed is very fast on the D200.

Specifications
Equiv. focal length25.5-52.5 mm (full format equivalent)
Equiv. aperturef/4.2-f/6 (full format equivalent, in terms of depth-of-field)
Optical construction14 elements in 11 groups inc. 3 hybrid aspherical elements and 1 LD element
Number of aperture blades7
min. focus distance0.3 m (max. magnification ratio ~1:5.4)
Dimensions83 x 87 mm
Weight440 g
Filter size77 mm (non-rotating)
Hoodsupplied, petal-shaped
Other features-




© by photozone.de