The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 30mm F2.8 EX DN and the Voigtlander Nokton 25mm F0.95 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. Voigtlander Nokton 25mm F0.95 is the longer of the two lenses at 70mm. The Sigma 30mm F2.8 EX DN with a length of 39mm, is 31mm shorter. On the other hand, the Sigma 30mm F2.8 EX DN has a larger diameter of 61mm compared to the Voigtlander Nokton 25mm F0.95's 58mm 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 F2.8 EX DN weighs 135g, which means it is 275g (67%) lighter than the Voigtlander Nokton 25mm F0.95 which has a weight of 410g.
Filter Threads
The Sigma 30mm F2.8 EX DN has a filter size of 46mm whereas the Voigtlander Nokton 25mm F0.95 has a 52mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 46mm filters that we recommend you to consider for the Sigma 30mm F2.8 EX DN:
And these are the 52mm filters that we recommend for the Voigtlander Nokton 25mm F0.95:
Lens Mounts
Both the Sigma 30mm F2.8 EX DN and the Voigtlander Nokton 25mm F0.95 has the same Micro Four Thirds lens mount. Some of the latest released cameras that are compatible with the Micro Four Thirds lenses are , and .
Sigma 30mm F2.8 EX DN is also available in Sony E mount.
Focal Range
Sigma 30mm F2.8 EX DN 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.
On the other hand, the Voigtlander Nokton 25mm F0.95 is a prime lens with fixed focal lenght of 25mm which has an effective (full-frame 35mm equivalent) focal range of 50mm when used on a FourThirds format camera.