The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Pentax DA 18-50mm F4.5-5.6 DC WR RE and the Voigtlander 58mm F1.4 SL II 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 DA 18-50mm F4.5-5.6 DC WR RE is the longer of the two lenses at 71mm. The Voigtlander 58mm F1.4 SL II with a length of 48mm, is 23mm shorter. On the other hand, the Voigtlander 58mm F1.4 SL II has a larger diameter of 64mm compared to the Pentax DA 18-50mm F4.5-5.6 DC WR RE'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 DA 18-50mm F4.5-5.6 DC WR RE weighs 158g, which means it is 162g (50%) lighter than the Voigtlander 58mm F1.4 SL II which has a weight of 320g.
Filter Threads
Both the Pentax DA 18-50mm F4.5-5.6 DC WR RE and the Voigtlander 58mm F1.4 SL II have the same Filter thread size of 58mm.
Below are links to the 58mm filters that we recommend you to consider for these lenses:
Lens Mounts
The Pentax DA 18-50mm F4.5-5.6 DC WR RE has the Pentax KAF3 lens mount whereas the Voigtlander 58mm F1.4 SL II has the Pentax KAF 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 KAF3 Mount and Pentax K-3 III Mono, Pentax KF and Pentax K-3 III for the Pentax KAF Mount.
Voigtlander 58mm F1.4 SL II is also available in Nikon F (FX) mount.
Focal Range
Pentax DA 18-50mm F4.5-5.6 DC WR RE has a focal range of 18-50mm and
2.8X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
27-75mm when used on a APS-C / DX format camera.
On the other hand, the Voigtlander 58mm F1.4 SL II is a prime lens with fixed focal lenght of 58mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 87mm.
