The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony E PZ 18-105mm F4 G and the Sigma 30mm F1.4 DC HSM 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. Sony E PZ 18-105mm F4 G is the longer of the two lenses at 110mm. The Sigma 30mm F1.4 DC HSM with a length of 63mm, is 47mm shorter. Besides being longer, the Sony E PZ 18-105mm F4 G also has a larger diameter of 78mm compared to the Sigma 30mm F1.4 DC HSM's 74mm 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. Sigma 30mm F1.4 DC HSM weighs 435g, 9% (47g) lighter than the Sony E PZ 18-105mm F4 G's weight of 482g.
Filter Threads
The Sony E PZ 18-105mm F4 G has a filter size of 72mm whereas the Sigma 30mm F1.4 DC HSM has a 62mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 72mm filters that we recommend you to consider for the Sony E PZ 18-105mm F4 G:
And these are the 62mm filters that we recommend for the Sigma 30mm F1.4 DC HSM:
Lens Mounts
The Sony E PZ 18-105mm F4 G has the Sony E lens mount whereas the Sigma 30mm F1.4 DC HSM has the Sigma SA 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 Sigma SD1 Merrill, Sigma SD1 and for the Sigma SA Mount.
Sigma 30mm F1.4 DC HSM is also available in Canon EF and Nikon F (DX) mounts.
Focal Range
Sony E PZ 18-105mm F4 G has a focal range of 18-105mm and
5.8X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
27-157.5mm when used on a APS-C / DX format camera.
On the other hand, the Sigma 30mm F1.4 DC HSM is a prime lens with fixed focal lenght of 30mm which has an effective (full-frame 35mm equivalent) focal range of 45mm when used on a APS-C / DX format camera.
