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 Leica Noctilux-M 50mm f0.95 ASPH 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 225g (32%) lighter than the Leica Noctilux-M 50mm f0.95 ASPH which has a weight of 700g.
Filter Threads
The Hasselblad XCD 45mm F3.5 has a filter size of 67mm whereas the Leica Noctilux-M 50mm f0.95 ASPH has a 60mm 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 60mm filters that we recommend for the Leica Noctilux-M 50mm f0.95 ASPH:
Lens Mounts
The Hasselblad XCD 45mm F3.5 has the Hasselblad X lens mount whereas the Leica Noctilux-M 50mm f0.95 ASPH has the Leica M 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 Leica M11 Monochrome, Leica M11 and Leica M10 for the Leica M Mount.
Focal Range
Hasselblad XCD 45mm F3.5 is a prime lens with fixed focal lenght of 45mm.
On the other hand, the Leica Noctilux-M 50mm f0.95 ASPH is a prime lens with fixed focal lenght of 50mm.