The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 105mm F1.4 DG HSM and the Sony FE 70-200mm F4 G 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 FE 70-200mm F4 G is the longer of the two lenses at 175mm. The Sigma 105mm F1.4 DG HSM with a length of 132mm, is 43mm shorter. On the other hand, the Sigma 105mm F1.4 DG HSM has a larger diameter of 116mm compared to the Sony FE 70-200mm F4 G's 80mm 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. Sony FE 70-200mm F4 G weighs 840g, 48% (805g) lighter than the Sigma 105mm F1.4 DG HSM's weight of 1645g.
Filter Threads
The Sigma 105mm F1.4 DG HSM has a filter size of 105mm whereas the Sony FE 70-200mm F4 G has a 72mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 105mm filters that we recommend you to consider for the Sigma 105mm F1.4 DG HSM:
And these are the 72mm filters that we recommend for the Sony FE 70-200mm F4 G:
Lens Mounts
Both the Sigma 105mm F1.4 DG HSM and the Sony FE 70-200mm F4 G has the same Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony ZV-E10 II, Sony A6700 and Sony FX30.
Sigma 105mm F1.4 DG HSM is also available in the Canon EF , Nikon F (FX) and Sigma SA mounts.
Focal Range
Sigma 105mm F1.4 DG HSM is a prime lens with fixed focal lenght of 105mm which has an effective (full-frame 35mm equivalent) focal range of
157.5mm when used on a 35mm FF format camera.
On the other hand, the Sony FE 70-200mm F4 G has a focal range of 70-200mm and 2.9X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 105 - 300mm.
