The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Pentax D FA 645 55mm F2.8 and the Pentax DFA645 Macro 90mm F2.8 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 DFA645 Macro 90mm F2.8 is the longer of the two lenses at 117mm. The Pentax D FA 645 55mm F2.8 with a length of 68mm, is 49mm shorter. Besides being longer, the Pentax DFA645 Macro 90mm F2.8 also has a larger diameter of 91mm compared to the Pentax D FA 645 55mm F2.8's 81mm 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 645 55mm F2.8 weighs 416g, which means it is 624g (60%) lighter than the Pentax DFA645 Macro 90mm F2.8 which has a weight of 1040g.
Filter Threads
Both the Pentax D FA 645 55mm F2.8 and the Pentax DFA645 Macro 90mm F2.8 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
Both the Pentax D FA 645 55mm F2.8 and the Pentax DFA645 Macro 90mm F2.8 has the same Pentax 645AF2 lens mount. Some of the latest released cameras that are compatible with the Pentax 645AF2 lenses are Pentax 645Z, Pentax 645D and .
Focal Range
Pentax D FA 645 55mm F2.8 is a prime lens with fixed focal lenght of 55mm.
On the other hand, the Pentax DFA645 Macro 90mm F2.8 is a prime lens with fixed focal lenght of 90mm.
