The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 23mm F1.4 DC DN C and the Fujifilm 18mm F2 R 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 23mm F1.4 DC DN C is the longer of the two lenses at 79mm. The Fujifilm 18mm F2 R with a length of 41mm, is 38mm shorter. Besides being longer, the Sigma 23mm F1.4 DC DN C also has a larger diameter of 66mm compared to the Fujifilm 18mm F2 R's 65mm diameter.
Below you can find a scaled side-by-side image of Sigma 23mm F1.4 DC DN C and Fujifilm 18mm F2 R to get a better idea of how their sizes compare in real life.
Comparison image of the Sigma 23mm F1.4 DC DN C and the Fujifilm 18mm F2 R 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 18mm F2 R weighs 116g, 64% (214g) lighter than the Sigma 23mm F1.4 DC DN C's weight of 330g.
Below you can find the dimension and weight table of the Wideangle Prime Lenses in Fujifilm X Mount for size comparison purposes.
Wideangle Lenses in Fujifilm X Mount for Size Comparison
Lens Mounts
Both the Sigma 23mm F1.4 DC DN C and the Fujifilm 18mm F2 R 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 23mm F1.4 DC DN C is also available in the Sony E and Leica L mounts.
Focal Range
Sigma 23mm F1.4 DC DN C is a prime lens with fixed focal lenght of 23mm which has an effective (full-frame 35mm equivalent) focal range of
34.5mm when used on a APS-C / DX format camera.
On the other hand, the Fujifilm 18mm F2 R is a prime lens with fixed focal lenght of 18mm which has an effective (full-frame 35mm equivalent) focal range of 27mm when used on a APS-C / DX format camera.