The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Pentax D FA 24-70mm F2.8 ED SDM WR and the Tamron 24-70mm f2.8 VC USD for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is a crucial factor to consider when comparing two lenses. Tamron 24-70mm f2.8 VC USD is the longer of the two lenses at 117mm. The Pentax D FA 24-70mm F2.8 ED SDM WR with a length of 110mm, is 7mm shorter. On the other hand, the Pentax D FA 24-70mm F2.8 ED SDM WR has a larger diameter of 89mm compared to the Tamron 24-70mm f2.8 VC USD's 88mm diameter.
The weight of a lens is equally significant as its external dimensions, particularly if you intend to handhold your camera and lens combination for extended periods. Pentax D FA 24-70mm F2.8 ED SDM WR weighs 787g, which means it is 38g (4%) lighter than the Tamron 24-70mm f2.8 VC USD which has a weight of 825g.
Lens Mounts
The Pentax D FA 24-70mm F2.8 ED SDM WR has the Pentax KAF3 lens mount whereas the Tamron 24-70mm f2.8 VC USD has the Sony Alpha lens mount. Some of the latest released cameras that are compatible with these mounts are Pentax K-3 III Mono, Pentax KF and Pentax K-3 III for the Pentax KAF3 Mount and Sony A99 II, Sony A68 and Sony A77 II for the Sony Alpha Mount.
Tamron 24-70mm f2.8 VC USD is also available in Canon EF and Nikon F (FX) mounts.
Focal Range
Both lenses have the same focal range of
24-70mm and the fastest aperture of
F2.8.
