The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 24mm F1.4 DG HSM A and the Panasonic DG 12mm F1.4 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 24mm F1.4 DG HSM A is the longer of the two lenses at 90mm. The Panasonic DG 12mm F1.4 with a length of 70mm, is 20mm shorter. Besides being longer, the Sigma 24mm F1.4 DG HSM A also has a larger diameter of 85mm compared to the Panasonic DG 12mm F1.4's 70mm diameter.
Below you can find a scaled side-by-side image of Sigma 24mm F1.4 DG HSM A and Panasonic DG 12mm F1.4 to get a better idea of how their sizes compare in real life.
Comparison image of the Sigma 24mm F1.4 DG HSM A and the Panasonic DG 12mm F1.4 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 DG 12mm F1.4 weighs 335g, 49% (330g) lighter than the Sigma 24mm F1.4 DG HSM A's weight of 665g.
Filter Threads
The Sigma 24mm F1.4 DG HSM A has a filter size of 77mm whereas the Panasonic DG 12mm F1.4 has a 62mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 77mm filters that we recommend you to consider for the Sigma 24mm F1.4 DG HSM A:
And these are the 62mm filters that we recommend for the Panasonic DG 12mm F1.4:
Lens Mounts
The Sigma 24mm F1.4 DG HSM A has the Leica L lens mount whereas the Panasonic DG 12mm F1.4 has the Micro Four Thirds 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 OM System OM-3 Astro , OM System OM-5 II and OM System OM-3 for the Micro Four Thirds Mount.
Sigma 24mm F1.4 DG HSM A is also available in the Canon EF , Nikon F (FX) and Sigma SA mounts.
Focal Range
Sigma 24mm F1.4 DG HSM A is a prime lens with fixed focal lenght of 24mm.
On the other hand, the Panasonic DG 12mm F1.4 is a prime lens with fixed focal lenght of 12mm which has an effective (full-frame 35mm equivalent) focal range of 24mm when used on a FourThirds format camera.