The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 30mm F1.4 C and the Panasonic Leica 25mm 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. Panasonic Leica 25mm F1.4 is the longer of the two lenses at 75mm. The Sigma 30mm F1.4 C with a length of 73mm, is 2mm shorter. Besides being longer, the Panasonic Leica 25mm F1.4 also has a larger diameter of 78mm compared to the Sigma 30mm F1.4 C's 65mm 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. Sigma 30mm F1.4 C weighs 265g, which means it is 245g (48%) lighter than the Panasonic Leica 25mm F1.4 which has a weight of 510g.
Filter Threads
The Sigma 30mm F1.4 C has a filter size of 52mm whereas the Panasonic Leica 25mm F1.4 has a 46mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 52mm filters that we recommend you to consider for the Sigma 30mm F1.4 C:
And these are the 46mm filters that we recommend for the Panasonic Leica 25mm F1.4:
Lens Mounts
The Sigma 30mm F1.4 C has the Micro Four Thirds lens mount whereas the Panasonic Leica 25mm F1.4 has the Four Thirds lens mount. Some of the latest released cameras that are compatible with these mounts are , and for the Micro Four Thirds Mount and Olympus E-5, Olympus E-600 and Olympus E-620 for the Four Thirds Mount.
Sigma 30mm F1.4 C is also available in the Sony E , Fujifilm X, Nikon Z, Leica L and Canon RF mounts.
Panasonic Leica 25mm F1.4 is also available in Micro Four Thirds mount.
Focal Range
Sigma 30mm F1.4 C is a prime lens with fixed focal lenght of 30mm which has an effective (full-frame 35mm equivalent) focal range of
45mm when used on a APS-C / DX format camera.
On the other hand, the Panasonic Leica 25mm F1.4 is a prime lens with fixed focal lenght of 25mm which has an effective (full-frame 35mm equivalent) focal range of 50mm when used on a FourThirds format camera.
