The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Samsung D-Xenon 100mm F2.8 macro and the Pentax D-FA 50mm F2.8 Macro 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. Samsung D-Xenon 100mm F2.8 macro is the longer of the two lenses at 81mm. The Pentax D-FA 50mm F2.8 Macro with a length of 60mm, is 21mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 68mm.
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 50mm F2.8 Macro weighs 265g, 23% (80g) lighter than the Samsung D-Xenon 100mm F2.8 macro's weight of 345g.
Filter Threads
Both the Samsung D-Xenon 100mm F2.8 macro and the Pentax D-FA 50mm F2.8 Macro have the same Filter thread size of 49mm.
Below are links to the 49mm filters that we recommend you to consider for these lenses:
Lens Mounts
The Samsung D-Xenon 100mm F2.8 macro has the Pentax KAF2 lens mount whereas the Pentax D-FA 50mm F2.8 Macro has the Pentax KAF lens mount. Some of the latest released cameras that are compatible with these mounts are , and for the Pentax KAF2 Mount and Pentax K-3 III Mono, Pentax KF and Pentax K-3 III for the Pentax KAF Mount.
Focal Range
Samsung D-Xenon 100mm F2.8 macro is a prime lens with fixed focal lenght of 100mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
150mm.
On the other hand, the Pentax D-FA 50mm F2.8 Macro is a prime lens with fixed focal lenght of 50mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 75mm.
