The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Voigtlander Ultron 27mm F2 and the Voigtlander Nokton 17.5mm F0.95 ASPH 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 17.5mm F0.95 ASPH is the longer of the two lenses at 80mm. The Voigtlander Ultron 27mm F2 with a length of 23mm, is 57mm shorter. Besides being longer, the Voigtlander Nokton 17.5mm F0.95 ASPH also has a larger diameter of 63mm compared to the Voigtlander Ultron 27mm F2's 59mm 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 Ultron 27mm F2 weighs 120g, which means it is 420g (77%) lighter than the Voigtlander Nokton 17.5mm F0.95 ASPH which has a weight of 540g.
Filter Threads
The Voigtlander Ultron 27mm F2 has a filter size of 43mm whereas the Voigtlander Nokton 17.5mm F0.95 ASPH 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 43mm filters that we recommend you to consider for the Voigtlander Ultron 27mm F2:
And these are the 58mm filters that we recommend for the Voigtlander Nokton 17.5mm F0.95 ASPH:
Lens Mounts
The Voigtlander Ultron 27mm F2 has the Fujifilm X lens mount whereas the Voigtlander Nokton 17.5mm F0.95 ASPH has the Micro Four Thirds lens mount. Some of the latest released cameras that are compatible with these mounts are Fujifilm X-T30 III, Fujifilm X-E5 and Fujifilm X-M5 for the Fujifilm X Mount and OM System OM-3 Astro, OM System OM-5 II and OM System OM-3 for the Micro Four Thirds Mount.
Focal Range
Voigtlander Ultron 27mm F2 is a prime lens with fixed focal lenght of 28mm which has an effective (full-frame 35mm equivalent) focal range of
40.5mm when used on a APS-C / DX format camera.
On the other hand, the Voigtlander Nokton 17.5mm F0.95 ASPH is a prime lens with fixed focal lenght of 18mm which has an effective (full-frame 35mm equivalent) focal range of 36mm when used on a FourThirds format camera.
