The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 35mm F1.4 DG DN Art and the Panasonic Leica 42.5mm F1.2 OIS 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. Sigma 35mm F1.4 DG DN Art is the longer of the two lenses at 110mm. The Panasonic Leica 42.5mm F1.2 OIS with a length of 77mm, is 33mm shorter. Besides being longer, the Sigma 35mm F1.4 DG DN Art also has a larger diameter of 76mm compared to the Panasonic Leica 42.5mm F1.2 OIS's 74mm 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. Panasonic Leica 42.5mm F1.2 OIS weighs 425g, 34% (220g) lighter than the Sigma 35mm F1.4 DG DN Art's weight of 645g.
Filter Threads
Both the Sigma 35mm F1.4 DG DN Art and the Panasonic Leica 42.5mm F1.2 OIS have the same Filter thread size of 67mm.
Below are links to the 67mm filters that we recommend you to consider for these lenses:
Lens Mounts
The Sigma 35mm F1.4 DG DN Art has the Sony E lens mount whereas the Panasonic Leica 42.5mm F1.2 OIS has the Micro Four Thirds lens mount. Some of the latest released cameras that are compatible with these mounts are Sony FX5, Sony A7R VI and Sony A7 V for the Sony E Mount and OM System OM-3 Astro, OM System OM-5 II and OM System OM-3 for the Micro Four Thirds Mount.
Sigma 35mm F1.4 DG DN Art is also available in the Leica L mount.
Focal Range
Sigma 35mm F1.4 DG DN Art 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.
On the other hand, the Panasonic Leica 42.5mm F1.2 OIS is a prime lens with fixed focal lenght of 43mm which has an effective (full-frame 35mm equivalent) focal range of 86mm when used on a FourThirds format camera.
