The type of photography that you are planning to use is an important decision factor. Here we have evaluated the HD Pentax-FA 43mm F1.9 Ltd and the Carl Zeiss Distagon T2/35 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. Carl Zeiss Distagon T2/35 is the longer of the two lenses at 99mm. The HD Pentax-FA 43mm F1.9 Ltd with a length of 27mm, is 72mm shorter. Besides being longer, the Carl Zeiss Distagon T2/35 also has a larger diameter of 72mm compared to the HD Pentax-FA 43mm F1.9 Ltd's 64mm 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. HD Pentax-FA 43mm F1.9 Ltd weighs 155g, which means it is 415g (72%) lighter than the Carl Zeiss Distagon T2/35 which has a weight of 570g.
Filter Threads
The HD Pentax-FA 43mm F1.9 Ltd has a filter size of 49mm whereas the Carl Zeiss Distagon T2/35 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 49mm filters that we recommend you to consider for the HD Pentax-FA 43mm F1.9 Ltd:
And these are the 58mm filters that we recommend for the Carl Zeiss Distagon T2/35:
Lens Mounts
Both the HD Pentax-FA 43mm F1.9 Ltd and the Carl Zeiss Distagon T2/35 has the same Pentax KAF lens mount. Some of the latest released cameras that are compatible with the Pentax KAF lenses are Pentax K-3 III Monochrome, Pentax KF and Pentax K-3 III.
Carl Zeiss Distagon T2/35 is also available in Canon EF and Nikon F (FX) mounts.
Focal Range
HD Pentax-FA 43mm F1.9 Ltd is a prime lens with fixed focal lenght of 43mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
64.5mm.
On the other hand, the Carl Zeiss Distagon T2/35 is a prime lens with fixed focal lenght of 35mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 52.5mm.