The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 70-200mm f2.8 LD and the Samsung D-Xenon 50-200 F4-5.6 ED 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 70-200mm f2.8 LD is the longer of the two lenses at 194mm. The Samsung D-Xenon 50-200 F4-5.6 ED with a length of 79mm, is 115mm shorter. Besides being longer, the Tamron 70-200mm f2.8 LD also has a larger diameter of 90mm compared to the Samsung D-Xenon 50-200 F4-5.6 ED's 67mm 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. Samsung D-Xenon 50-200 F4-5.6 ED weighs 255g, 80% (1075g) lighter than the Tamron 70-200mm f2.8 LD's weight of 1330g.
Filter Threads
The Tamron 70-200mm f2.8 LD has a filter size of 77mm whereas the Samsung D-Xenon 50-200 F4-5.6 ED has a 52mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 77mm filters that we recommend you to consider for the Tamron 70-200mm f2.8 LD:
And these are the 52mm filters that we recommend for the Samsung D-Xenon 50-200 F4-5.6 ED:
Lens Mounts
The Tamron 70-200mm f2.8 LD has the Pentax KAF lens mount whereas the Samsung D-Xenon 50-200 F4-5.6 ED has the Pentax KAF2 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 KAF Mount and , and for the Pentax KAF2 Mount.
Tamron 70-200mm f2.8 LD is also available in the Canon EF , Nikon F (FX) and Sony Alpha mounts.
Focal Range
Tamron 70-200mm f2.8 LD has a focal range of 70-200mm and
2.9X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
105 - 300mm.
On the other hand, the Samsung D-Xenon 50-200 F4-5.6 ED has a focal range of 50-200mm and 4.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 75-300mm when used on a APS-C / DX format camera.
