The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Pentax FA 70-210mm F4 ED SDM WR and the Tamron 70-210mm F4 Di VC USD for their suitability to various photography scenarios:
Size and Weight Comparison
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 FA 70-210mm F4 ED SDM WR weighs 819g, which means it is 40g (4%) lighter than the Tamron 70-210mm F4 Di VC USD which has a weight of 859g.
Filter Threads
Both the Pentax FA 70-210mm F4 ED SDM WR and the Tamron 70-210mm F4 Di VC USD have the same Filter thread size of 67mm.
Below are links to the 67mm filters that we recommend you to consider for these lenses:
Lens Mounts
The Pentax FA 70-210mm F4 ED SDM WR has the Pentax KAF4 lens mount whereas the Tamron 70-210mm F4 Di VC USD has the Canon EF lens mount. Some of the latest released cameras that are compatible with these mounts are Pentax K-3 III Monochrome, Pentax KF and Pentax K-3 III for the Pentax KAF4 Mount and Canon 1D X III, Canon 6D MII and Canon 5D MIV for the Canon EF Mount.
Tamron 70-210mm F4 Di VC USD is also available in Nikon F (FX) mount.
Focal Range
Both lenses have the same focal range of
70-210mm and the fastest aperture of
F4.