The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 45mm F2.8 DG DN C and the Panasonic Leica 14-50mm F3.8-5.6 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. Panasonic Leica 14-50mm F3.8-5.6 OIS is the longer of the two lenses at 93mm. The Sigma 45mm F2.8 DG DN C with a length of 46mm, is 47mm shorter. Besides being longer, the Panasonic Leica 14-50mm F3.8-5.6 OIS also has a larger diameter of 75mm compared to the Sigma 45mm F2.8 DG DN C's 64mm 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 45mm F2.8 DG DN C weighs 215g, which means it is 219g (50%) lighter than the Panasonic Leica 14-50mm F3.8-5.6 OIS which has a weight of 434g.
Filter Threads
The Sigma 45mm F2.8 DG DN C has a filter size of 55mm whereas the Panasonic Leica 14-50mm F3.8-5.6 OIS has a 67mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 55mm filters that we recommend you to consider for the Sigma 45mm F2.8 DG DN C:
And these are the 67mm filters that we recommend for the Panasonic Leica 14-50mm F3.8-5.6 OIS:
Lens Mounts
The Sigma 45mm F2.8 DG DN C has the Leica L lens mount whereas the Panasonic Leica 14-50mm F3.8-5.6 OIS has the 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 Olympus E-5, Olympus E-600 and Olympus E-620 for the Four Thirds Mount.
Sigma 45mm F2.8 DG DN C is also available in the Sony E mount.
Focal Range
Sigma 45mm F2.8 DG DN C is a prime lens with fixed focal lenght of 45mm.
On the other hand, the Panasonic Leica 14-50mm F3.8-5.6 OIS has a focal range of 14-50mm and 3.6X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 28-100mm when used on a FourThirds format camera.
