The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Olympus 17mm F1.2 Pro 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. Olympus 17mm F1.2 Pro is the longer of the two lenses at 87mm. The Voigtlander Nokton 17.5mm F0.95 ASPH with a length of 80mm, is 7mm shorter. Besides being longer, the Olympus 17mm F1.2 Pro also has a larger diameter of 68mm compared to the Voigtlander Nokton 17.5mm F0.95 ASPH's 63mm 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. Olympus 17mm F1.2 Pro weighs 390g, which means it is 150g (27%) lighter than the Voigtlander Nokton 17.5mm F0.95 ASPH which has a weight of 540g.
Below you can find the dimension and weight table of the Wideangle Prime Lenses in Micro Four Thirds Mount for size comparison purposes.
Wideangle Lenses in Micro Four Thirds Mount for Size Comparison
Filter Threads
The Olympus 17mm F1.2 Pro has a filter size of 62mm 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 62mm filters that we recommend you to consider for the Olympus 17mm F1.2 Pro:
And these are the 58mm filters that we recommend for the Voigtlander Nokton 17.5mm F0.95 ASPH:
Lens Mounts
Both the Olympus 17mm F1.2 Pro and the Voigtlander Nokton 17.5mm F0.95 ASPH has the same Micro Four Thirds lens mount. Some of the latest released cameras that are compatible with the Micro Four Thirds lenses are OM System OM-3 Astro, OM System OM-5 II and OM System OM-3.
Focal Range
Olympus 17mm F1.2 Pro is a prime lens with fixed focal lenght of 17mm which has an effective (full-frame 35mm equivalent) focal range of
34mm when used on a FourThirds 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.