The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Viltrox AF 40mm f2.5 E and the Sigma 30mm F1.4 C 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 30mm F1.4 C is the longer of the two lenses at 73mm. The Viltrox AF 40mm f2.5 E with a length of 56mm, is 17mm shorter. On the other hand, the Viltrox AF 40mm f2.5 E has a larger diameter of 68mm compared to the Sigma 30mm F1.4 C's 65mm diameter.
Below you can find a scaled side-by-side image of Viltrox AF 40mm f2.5 E and Sigma 30mm F1.4 C to get a better idea of how their sizes compare in real life.
Comparison image of the Viltrox AF 40mm f2.5 E and the Sigma 30mm F1.4 C 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. Viltrox AF 40mm f2.5 E weighs 180g, which means it is 85g (32%) lighter than the Sigma 30mm F1.4 C which has a weight of 265g.
Filter Threads
Both the Viltrox AF 40mm f2.5 E and the Sigma 30mm F1.4 C have the same Filter thread size of 52mm .
Below are links to the 52mm filters that we recommend you to consider for these lenses:
Lens Mounts
The Viltrox AF 40mm f2.5 E has the Sony E lens mount whereas the Sigma 30mm F1.4 C has the Nikon Z 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 RED Komodo-X 6K Z , Nikon Z50 II and Nikon Z30 for the Nikon Z Mount.
Sony E , Micro Four Thirds , Fujifilm X , Leica L and Canon RF mounts.
Focal Range
Viltrox AF 40mm f2.5 E 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 30mm F1.4 C 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.
