The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 70-200mm f2.8 LD and the Sony 70-200mm F2.8 G for their suitability to various photography scenarios:
Size and Weight Comparison
Size of a lens is an important deciding factor when comparing two lenses.Sony 70-200mm F2.8 G is the longer of the two lenses at 197mm. The Tamron 70-200mm f2.8 LD with a length of 194mm is 3mm shorter. On the other hand, the Tamron 70-200mm f2.8 LD has a larger diameter of 90mm compared to Sony 70-200mm F2.8 G's 87mm diameter.
Weight of a lens is as important as its external dimensions, especially if you are planning to hand hold your camera and lens combination for longer periods. Tamron 70-200mm f2.8 LD weighs 1330g, which means it is 170g (11%) lighter than the Sony 70-200mm F2.8 G which has a weight of 1500g.
Below you can find the dimension and weight table of the 'Telephoto Zoom Lenses in Sony Alpha Mount for size comparison purposes.
Telephoto Zoom Lenses in Sony Alpha Mount for Size Comparison
Both Tamron 70-200mm f2.8 LD and Sony 70-200mm F2.8 G has the same Sony Alpha lens mount. Some of the latest released cameras that are compatible with the Sony Alpha lenses are Sony A99 II, Sony A68 and Sony A77 II.
Tamron 70-200mm f2.8 LD is also available in Canon EF , Nikon F (FX) and Pentax KAF mounts.
Both lenses have the same focal range of 70-200mm and the fastest aperture of F2.8.