The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Irix 45mm F1.4 and the Schneider PC-TS 2.8/50 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. Irix 45mm F1.4 weighs 925g, which means it is 475g (33%) lighter than the Schneider PC-TS 2.8/50 which has a weight of 1400g.
Filter Threads
The Irix 45mm F1.4 has a filter size of 77mm whereas the Schneider PC-TS 2.8/50 has a 95mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 77mm filters that we recommend you to consider for the Irix 45mm F1.4:
And these are the 95mm filters that we recommend for the Schneider PC-TS 2.8/50:
Lens Mounts
Both the Irix 45mm F1.4 and the Schneider PC-TS 2.8/50 has the same Nikon F (FX) lens mount. Some of the latest released cameras that are compatible with the Nikon F (FX) lenses are Nikon D6, Nikon D780 and Nikon D3500.
Irix 45mm F1.4 is also available in Canon EF and Pentax KAF2 mounts.
Schneider PC-TS 2.8/50 is also available in Canon EF , Pentax KAF and Sony Alpha mounts.
Focal Range
Irix 45mm F1.4 is a prime lens with fixed focal lenght of 45mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
67.5mm.
On the other hand, the Schneider PC-TS 2.8/50 is a prime lens with fixed focal lenght of 50mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 75mm.