The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Leica TL 35mm F1.4 ASPH and the HD Pentax-FA 43mm F1.9 Ltd 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. Leica TL 35mm F1.4 ASPH is the longer of the two lenses at 77mm. The HD Pentax-FA 43mm F1.9 Ltd with a length of 27mm, is 50mm shorter. Besides being longer, the Leica TL 35mm F1.4 ASPH also has a larger diameter of 70mm compared to the HD Pentax-FA 43mm F1.9 Ltd's 64mm diameter.
Below you can find a scaled side-by-side image of Leica TL 35mm F1.4 ASPH and HD Pentax-FA 43mm F1.9 Ltd to get a better idea of how their sizes compare in real life.
Comparison image of the Leica TL 35mm F1.4 ASPH and the HD Pentax-FA 43mm F1.9 Ltd 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. HD Pentax-FA 43mm F1.9 Ltd weighs 155g, 63% (273g) lighter than the Leica TL 35mm F1.4 ASPH's weight of 428g.
Filter Threads
The Leica TL 35mm F1.4 ASPH has a filter size of 60mm whereas the HD Pentax-FA 43mm F1.9 Ltd has a 49mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 60mm filters that we recommend you to consider for the Leica TL 35mm F1.4 ASPH:
And these are the 49mm filters that we recommend for the HD Pentax-FA 43mm F1.9 Ltd:
Lens Mounts
The Leica TL 35mm F1.4 ASPH has the Leica L lens mount whereas the HD Pentax-FA 43mm F1.9 Ltd has the Pentax KAF lens mount . Some of the latest released cameras that are compatible with these mounts are Pentax K-3 III Mono , Pentax KF and Pentax K-3 III for the Pentax KAF Mount.
Focal Range
Leica TL 35mm F1.4 ASPH is a prime lens with fixed focal lenght of 35mm which has an effective (full-frame 35mm equivalent) focal range of
52.5mm when used on a APS-C / DX format camera.
On the other hand, the 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 .
