The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Panasonic S 35mm F1.8 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. Pentax-D FA645 35mm F3.5 AL IF is the longer of the two lenses at 90mm. The Panasonic S 35mm F1.8 with a length of 82mm, is 8mm shorter. Besides being longer, the Pentax-D FA645 35mm F3.5 AL IF also has a larger diameter of 88mm compared to the Panasonic S 35mm F1.8's 74mm diameter.
Below you can find a scaled side-by-side image of Panasonic S 35mm F1.8 and Pentax-D FA645 35mm F3.5 AL IF to get a better idea of how their sizes compare in real life.
Comparison image of the Panasonic S 35mm F1.8 and the Pentax-D FA645 35mm F3.5 AL IF Size and Weight 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. Panasonic S 35mm F1.8 weighs 295g, which means it is 275g (48%) lighter than the Pentax-D FA645 35mm F3.5 AL IF which has a weight of 570g.
Filter Threads
The Panasonic S 35mm F1.8 has a filter size of 67mm 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 67mm filters that we recommend you to consider for the Panasonic S 35mm F1.8:
And these are the 82mm filters that we recommend for the Pentax-D FA645 35mm F3.5 AL IF:
Lens Mounts
The Panasonic S 35mm F1.8 has the Leica L 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 Leica SL3-P , Panasonic S1 II and Panasonic S1 IIE for the Leica L Mount and Pentax 645Z , Pentax 645D and
Focal Range
Both lenses have the same focal range of
35mm but while Panasonic S 35mm F1.8 has the fastest aperture of
F1.8 , the Pentax-D FA645 35mm F3.5 AL IF's widest aperture value is
F3.5 - F32.0 .
