The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 35mm f1.4 II 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. Sigma 35mm f1.4 II is the longer of the two lenses at 94mm. The Voigtlander Nokton 25mm F0.95 with a length of 70mm, is 24mm shorter. Besides being longer, the Sigma 35mm f1.4 II also has a larger diameter of 73mm 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. Voigtlander Nokton 25mm F0.95 weighs 410g, 22% (120g) lighter than the Sigma 35mm f1.4 II's weight of 530g.
Filter Threads
The Sigma 35mm f1.4 II has a filter size of 67mm 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 67mm filters that we recommend you to consider for the Sigma 35mm f1.4 II:
And these are the 52mm filters that we recommend for the Voigtlander Nokton 25mm F0.95:
Lens Mounts
The Sigma 35mm f1.4 II has the Leica L lens mount whereas the Voigtlander Nokton 25mm F0.95 has the Micro Four Thirds lens mount. Some of the latest released cameras that are compatible with these mounts are Leica SL3-P, Panasonic S1 II and Panasonic S1 IIE for the Leica L Mount and OM System OM-3 Astro, OM System OM-5 II and OM System OM-3 for the Micro Four Thirds Mount.
Sigma 35mm f1.4 II is also available in the Sony E mount.
Focal Range
Sigma 35mm f1.4 II is a prime lens with fixed focal lenght of 35mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
52.5mm.
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.
