Tamron AF 70-300 mm f/ 4-5.6 Di LD Macro lens
Format: 35mm SLR
Type: Zoom lens
Focusing: Auto Focus (AF)
Lens mounts: Canon EF, EF-S
First year of production: 2006
Optical design: 13 elements in 9 groups (1LD lens))
Specifications:
Focal length 70mm - 300mm
Max. aperture f/4.0 - f/5.6
Min. aperture f/4.0 - f/5.6
Blades 9
Min. Focus (m.) 0.95
Filter Ø (mm.) 62
Weight (gr/oz) 435/15,3
Length (mm/in) 116.5/4,
diagonal angle of view 34°21 '- 8°15' (1.55x)
equivalent focal length on APS-C (1.55x) 109-465 mm
max. magnification 1:2
diameter 76.6
The Tamron AF 70-300mm F/4-5.6 Di LD Macro (Model A17) is a full-format telephoto 4x zoom lens capable of taking 1:2 macro scale pictures.

The optical scheme of the Tamron AF 70-300 mm f/ 4-5.6 Di LD Macro employs one LD element to correct aberrations, optical elements multicoating and inner surfaces coating. By means of the macro switch in the range of 180-300 mm you can achieve a max. object magnification of 1:2 at the minimum distance of 95 cm.

Evaluation of Tamron designations:

AF : autofocus
Di (Digitally integrated) - optimized for full-format digital cameras
LD - low dispersion glass minimizing aberrations and increasing contrast
Macro - macro mode with a magnification of 1:4 available

with lens hood and lens cap
自動对焦正常。光圈只能最大
。鏡片可以。