The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 15mm F2.8 EX DG Fisheye and the Samsung D-Xenon 10-17mm F3.5-4.5 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 10-17mm F3.5-4.5 is the longer of the two lenses at 72mm. The Sigma 15mm F2.8 EX DG Fisheye with a length of 65mm, is 7mm shorter. On the other hand, the Sigma 15mm F2.8 EX DG Fisheye has a larger diameter of 74mm compared to the Samsung D-Xenon 10-17mm F3.5-4.5's 68mm 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 10-17mm F3.5-4.5 weighs 320g, 13% (50g) lighter than the Sigma 15mm F2.8 EX DG Fisheye's weight of 370g.
Lens Mounts
The Sigma 15mm F2.8 EX DG Fisheye has the Pentax KAF lens mount whereas the Samsung D-Xenon 10-17mm F3.5-4.5 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.
Sigma 15mm F2.8 EX DG Fisheye is also available in the Canon EF , Nikon F (FX), Sony Alpha and Sigma SA mounts.
Focal Range
Sigma 15mm F2.8 EX DG Fisheye is a prime lens with fixed focal lenght of 15mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
22.5mm.
On the other hand, the Samsung D-Xenon 10-17mm F3.5-4.5 has a focal range of 10-17mm and 1.7X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 15-25.5mm when used on a APS-C / DX format camera.
