The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Hasselblad XCD 25mm F2.5 V and the Pentax-D FA645 35mm F3.5 AL IF 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. Hasselblad XCD 25mm F2.5 V is the longer of the two lenses at 105mm. The Pentax-D FA645 35mm F3.5 AL IF with a length of 90mm, is 15mm shorter. On the other hand, the Pentax-D FA645 35mm F3.5 AL IF has a larger diameter of 88mm compared to the Hasselblad XCD 25mm F2.5 V's 75mm 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. Pentax-D FA645 35mm F3.5 AL IF weighs 570g, 3% (22g) lighter than the Hasselblad XCD 25mm F2.5 V's weight of 592g.
Filter Threads
The Hasselblad XCD 25mm F2.5 V has a filter size of 72mm whereas the Pentax-D FA645 35mm F3.5 AL IF has a 82mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 72mm filters that we recommend you to consider for the Hasselblad XCD 25mm F2.5 V:
And these are the 82mm filters that we recommend for the Pentax-D FA645 35mm F3.5 AL IF:
Lens Mounts
The Hasselblad XCD 25mm F2.5 V has the Hasselblad X lens mount whereas the Pentax-D FA645 35mm F3.5 AL IF has the Pentax 645AF2 lens mount. Some of the latest released cameras that are compatible with these mounts are Hasselblad X2D II, Hasselblad X2D and Hasselblad X1D II for the Hasselblad X Mount and Pentax 645Z, Pentax 645D and for the Pentax 645AF2 Mount.
Focal Range
Hasselblad XCD 25mm F2.5 V is a prime lens with fixed focal lenght of 25mm.
On the other hand, the Pentax-D FA645 35mm F3.5 AL IF is a prime lens with fixed focal lenght of 35mm.