The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 150-500mm F5-6.7 and the Pentax D FA 150-450mm F4.5-5.6 ED DC AW 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. Pentax D FA 150-450mm F4.5-5.6 ED DC AW is the longer of the two lenses at 242mm. The Tamron 150-500mm F5-6.7 with a length of 210mm, is 32mm shorter. Besides being longer, the Pentax D FA 150-450mm F4.5-5.6 ED DC AW also has a larger diameter of 95mm compared to the Tamron 150-500mm F5-6.7's 93mm 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. Tamron 150-500mm F5-6.7 weighs 1724g, which means it is 276g (13%) lighter than the Pentax D FA 150-450mm F4.5-5.6 ED DC AW which has a weight of 2000g.
Filter Threads
The Tamron 150-500mm F5-6.7 has a filter size of 82mm whereas the Pentax D FA 150-450mm F4.5-5.6 ED DC AW has a 86mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 82mm filters that we recommend you to consider for the Tamron 150-500mm F5-6.7:
And these are the 86mm filters that we recommend for the Pentax D FA 150-450mm F4.5-5.6 ED DC AW:
Lens Mounts
The Tamron 150-500mm F5-6.7 has the Nikon Z lens mount whereas the Pentax D FA 150-450mm F4.5-5.6 ED DC AW has the Pentax KAF3 lens mount. Some of the latest released cameras that are compatible with these mounts are Nikon ZR, Nikon Z5 II and RED Komodo-X 6K Z for the Nikon Z Mount and Pentax K-3 III Mono, Pentax KF and Pentax K-3 III for the Pentax KAF3 Mount.
Tamron 150-500mm F5-6.7 is also available in the Sony E and Fujifilm X mounts.
Focal Range
Tamron 150-500mm F5-6.7 has a focal range of 150-500mm and
3.3X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
225 - 750mm.
On the other hand, the Pentax D FA 150-450mm F4.5-5.6 ED DC AW has a focal range of 150-450mm and 3.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 225 - 675mm.
