The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 18-50mm F2.8 DC DN C and the Fujifilm XC 15-45mm F3.5-5.6 OIS PZ 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 18-50mm F2.8 DC DN C is the longer of the two lenses at 77mm. The Fujifilm XC 15-45mm F3.5-5.6 OIS PZ with a length of 44mm, is 33mm shorter. On the other hand, the Fujifilm XC 15-45mm F3.5-5.6 OIS PZ has a larger diameter of 63mm compared to the Sigma 18-50mm F2.8 DC DN C's 62mm diameter.
Below you can find a scaled side-by-side image of Sigma 18-50mm F2.8 DC DN C and Fujifilm XC 15-45mm F3.5-5.6 OIS PZ to get a better idea of how their sizes compare in real life.
Comparison image of the Sigma 18-50mm F2.8 DC DN C and the Fujifilm XC 15-45mm F3.5-5.6 OIS PZ 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. Fujifilm XC 15-45mm F3.5-5.6 OIS PZ weighs 136g, 52% (149g) lighter than the Sigma 18-50mm F2.8 DC DN C's weight of 285g.
Below you can find the dimension and weight table of the Standard Zoom Lenses in Fujifilm X Mount for size comparison purposes.
Standard Lenses in Fujifilm X Mount for Size Comparison
Filter Threads
The Sigma 18-50mm F2.8 DC DN C has a filter size of 55mm whereas the Fujifilm XC 15-45mm F3.5-5.6 OIS PZ has a 52mm 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 18-50mm F2.8 DC DN C:
And these are the 52mm filters that we recommend for the Fujifilm XC 15-45mm F3.5-5.6 OIS PZ:
Lens Mounts
Both the Sigma 18-50mm F2.8 DC DN C and the Fujifilm XC 15-45mm F3.5-5.6 OIS PZ has the same Fujifilm X lens mount . Some of the latest released cameras that are compatible with the Fujifilm X lenses are Fujifilm X-T30 III , Fujifilm X-E5 and Fujifilm X-M5 .
Sigma 18-50mm F2.8 DC DN C is also available in the Leica L and Sony E mounts.
Focal Range
Sigma 18-50mm F2.8 DC DN C has a focal range of 18-50mm and
2.8X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
27-75mm when used on a APS-C / DX format camera.
On the other hand, the Fujifilm XC 15-45mm F3.5-5.6 OIS PZ has a focal range of 15-45mm and 3.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 22.5-67.5mm when used on a APS-C / DX format camera.