The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony FE 40mm F2.5 G and the Sigma 35mm F2 DG DN 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. Sigma 35mm F2 DG DN is the longer of the two lenses at 65mm. The Sony FE 40mm F2.5 G with a length of 45mm, is 20mm shorter. Besides being longer, the Sigma 35mm F2 DG DN also has a larger diameter of 70mm compared to the Sony FE 40mm F2.5 G's 68mm diameter.
Below you can find a scaled side-by-side image of Sony FE 40mm F2.5 G and Sigma 35mm F2 DG DN to get a better idea of how their sizes compare in real life.
Comparison image of the Sony FE 40mm F2.5 G and the Sigma 35mm F2 DG DN Size and Weight 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 40mm F2.5 G weighs 173g, which means it is 152g (46%) lighter than the Sigma 35mm F2 DG DN which has a weight of 325g.
Filter Threads
The Sony FE 40mm F2.5 G has a filter size of 49mm whereas the Sigma 35mm F2 DG DN has a 58mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 49mm filters that we recommend you to consider for the Sony FE 40mm F2.5 G:
And these are the 58mm filters that we recommend for the Sigma 35mm F2 DG DN:
Lens Mounts
The Sony FE 40mm F2.5 G has the Sony E lens mount whereas the Sigma 35mm F2 DG DN has the Leica L lens mount . Some of the latest released cameras that are compatible with these mounts are Sony FX5 , Sony A7R VI and Sony A7 V for the Sony E Mount and Leica SL3-P , Panasonic S1 II and Panasonic S1 IIE for the Leica L Mount.
Sony E mount.
Focal Range
Sony FE 40mm F2.5 G is a prime lens with fixed focal lenght of 40mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
60mm .
On the other hand, the Sigma 35mm F2 DG DN is a prime lens with fixed focal lenght of 35mm.
