The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Viltrox 28mm F4.5 XF and the Pentax 07 Mount Shield Lens 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. Viltrox 28mm F4.5 XF is the longer of the two lenses at 20mm. The Pentax 07 Mount Shield Lens with a length of 7mm, is 13mm shorter. Besides being longer, the Viltrox 28mm F4.5 XF also has a larger diameter of 60mm compared to the Pentax 07 Mount Shield Lens's 41mm 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 07 Mount Shield Lens weighs 8g, 90% (80g) lighter than the Viltrox 28mm F4.5 XF's weight of 88g.
Lens Mounts
The Viltrox 28mm F4.5 XF has the Fujifilm X lens mount whereas the Pentax 07 Mount Shield Lens has the Pentax Q lens mount. Some of the latest released cameras that are compatible with these mounts are Fujifilm X-T30 III, Fujifilm X-E5 and Fujifilm X-M5 for the Fujifilm X Mount and , and for the Pentax Q Mount.
Focal Range
Viltrox 28mm F4.5 XF is a prime lens with fixed focal lenght of 28mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
42mm.
On the other hand, the Pentax 07 Mount Shield Lens is a prime lens with fixed focal lenght of 12mm which has an effective (full-frame 35mm equivalent) focal range of 54.6mm when used on a 1/1.7" format camera.
