The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Viltrox 35mm F1.7 E and the Pentax 15mm F4 L 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 35mm F1.7 E is the longer of the two lenses at 56mm. The Pentax 15mm F4 L with a length of 40mm, is 16mm shorter. Besides being longer, the Viltrox 35mm F1.7 E also has a larger diameter of 64mm compared to the Pentax 15mm F4 L's 63mm 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. Viltrox 35mm F1.7 E weighs 180g, which means it is 32g (15%) lighter than the Pentax 15mm F4 L which has a weight of 212g.
Filter Threads
The Viltrox 35mm F1.7 E has a filter size of 52mm whereas the Pentax 15mm F4 L has a 49mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 52mm filters that we recommend you to consider for the Viltrox 35mm F1.7 E:
And these are the 49mm filters that we recommend for the Pentax 15mm F4 L:
Lens Mounts
The Viltrox 35mm F1.7 E has the Sony E lens mount whereas the Pentax 15mm F4 L has the Pentax KAF lens mount. Some of the latest released cameras that are compatible with these mounts are Sony ZV-E10 II, Sony A6700 and Sony FX30 for the Sony E Mount and Pentax K-3 III Mono, Pentax KF and Pentax K-3 III for the Pentax KAF Mount.
Focal Range
Viltrox 35mm F1.7 E is a prime lens with fixed focal lenght of 35mm which has an effective (full-frame 35mm equivalent) focal range of
52.5mm when used on a APS-C / DX format camera.
On the other hand, the Pentax 15mm F4 L is a prime lens with fixed focal lenght of 15mm which has an effective (full-frame 35mm equivalent) focal range of 22.5mm when used on a APS-C / DX format camera.
