The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Panasonic Leica 35-100mm f2.8 and the HD Pentax-D FA 50mm F1.4 SDM AW 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. HD Pentax-D FA 50mm F1.4 SDM AW is the longer of the two lenses at 106mm. The Panasonic Leica 35-100mm f2.8 with a length of 100mm, is 6mm shorter. Besides being longer, the HD Pentax-D FA 50mm F1.4 SDM AW also has a larger diameter of 80mm compared to the Panasonic Leica 35-100mm f2.8's 67mm diameter.
Below you can find a scaled side-by-side image of Panasonic Leica 35-100mm f2.8 and HD Pentax-D FA 50mm F1.4 SDM AW to get a better idea of how their sizes compare in real life.
Comparison image of the Panasonic Leica 35-100mm f2.8 and the HD Pentax-D FA 50mm F1.4 SDM AW 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 Leica 35-100mm f2.8 weighs 360g, which means it is 550g (60%) lighter than the HD Pentax-D FA 50mm F1.4 SDM AW which has a weight of 910g.
Lens Mounts
The Panasonic Leica 35-100mm f2.8 has the Micro Four Thirds lens mount whereas the HD Pentax-D FA 50mm F1.4 SDM AW has the Pentax KAF3 lens mount . Some of the latest released cameras that are compatible with these mounts are OM System OM-3 Astro , OM System OM-5 II and OM System OM-3 for the Micro Four Thirds Mount and Pentax K-3 III Mono , Pentax KF and Pentax K-3 III for the Pentax KAF3 Mount.
Focal Range
Panasonic Leica 35-100mm f2.8 has a focal range of 35-100mm and
2.9X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
70-200mm when used on a FourThirds format camera.
On the other hand, the HD Pentax-D FA 50mm F1.4 SDM AW 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 .
