Size and Weight Comparison The size of a lens is a crucial factor to consider when comparing two lenses. Sigma 17mm F4 DG DN C is the longer of the two lenses at 51mm. The Sony FE 40mm F2.5 G with a length of 45mm, is 6mm shorter. On the other hand, the Sony FE 40mm F2.5 G has a larger diameter of 68mm compared to the Sigma 17mm F4 DG DN C's 64mm diameter.
Below you can find a scaled side-by-side image of Sigma 17mm F4 DG DN C and Sony FE 40mm F2.5 G to get a better idea of how their sizes compare in real life.
Comparison image of the Sigma 17mm F4 DG DN C and the Sony FE 40mm F2.5 G 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, 21% (47g) lighter than the Sigma 17mm F4 DG DN C's weight of 220g.
Filter Threads
The Sigma 17mm F4 DG DN C has a filter size of 55mm whereas the Sony FE 40mm F2.5 G 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 55mm filters that we recommend you to consider for the Sigma 17mm F4 DG DN C:
And these are the 49mm filters that we recommend for the Sony FE 40mm F2.5 G:
Lens Mounts
Both the Sigma 17mm F4 DG DN C and the Sony FE 40mm F2.5 G has the same Sony E lens mount . Some of the latest released cameras that are compatible with the Sony E lenses are Sony FX5 , Sony A7R VI and Sony A7 V .
Focal Range
Sigma 17mm F4 DG DN C is a prime lens with fixed focal lenght of 17mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
25.5mm .
On the other hand, the 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 .
