The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Hasselblad XCD 45mm F3.5 and the Voigtlander Nokton 42.5mm F0.95 for their suitability to various photography scenarios:
Size and Weight Comparison
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. Hasselblad XCD 45mm F3.5 weighs 475g, which means it is 96g (16%) lighter than the Voigtlander Nokton 42.5mm F0.95 which has a weight of 571g.
Filter Threads
The Hasselblad XCD 45mm F3.5 has a filter size of 67mm whereas the Voigtlander Nokton 42.5mm F0.95 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 67mm filters that we recommend you to consider for the Hasselblad XCD 45mm F3.5:
And these are the 58mm filters that we recommend for the Voigtlander Nokton 42.5mm F0.95:
Lens Mounts
The Hasselblad XCD 45mm F3.5 has the Hasselblad X lens mount whereas the Voigtlander Nokton 42.5mm F0.95 has the Micro Four Thirds lens mount. Some of the latest released cameras that are compatible with these mounts are Hasselblad X2D, Hasselblad X1D II 50C and Hasselblad X1D for the Hasselblad X Mount and OM System OM-1 II, Panasonic G9 II and OM System OM-5 for the Micro Four Thirds Mount.
Focal Range
Hasselblad XCD 45mm F3.5 is a prime lens with fixed focal lenght of 45mm.
On the other hand, the Voigtlander Nokton 42.5mm F0.95 is a prime lens with fixed focal lenght of 43mm which has an effective (full-frame 35mm equivalent) focal range of 86mm when used on a FourThirds format camera.