The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 23mm F1.4 C and the Canon RF 28mm F2.8 STM 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 C is the longer of the two lenses at 79mm. The Canon RF 28mm F2.8 STM with a length of 25mm, is 54mm shorter. On the other hand, the Canon RF 28mm F2.8 STM has a larger diameter of 69mm compared to the Sigma 23mm F1.4 C's 66mm diameter.
Below you can find a scaled side-by-side image of Sigma 23mm F1.4 C and Canon RF 28mm F2.8 STM to get a better idea of how their sizes compare in real life.
Comparison image of the Sigma 23mm F1.4 C and the Canon RF 28mm F2.8 STM 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. Canon RF 28mm F2.8 STM weighs 120g, 63% (210g) lighter than the Sigma 23mm F1.4 C's weight of 330g.
Below you can find the dimension and weight table of the Wideangle Prime Lenses in Canon RF Mount for size comparison purposes.
Wideangle Canon RF Mount
Filter Threads
The Sigma 23mm F1.4 C has a filter size of 52mm whereas the Canon RF 28mm F2.8 STM has a 55mm 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 23mm F1.4 C:
And these are the 55mm filters that we recommend for the Canon RF 28mm F2.8 STM:
Lens Mounts
Both the Sigma 23mm F1.4 C and the Canon RF 28mm F2.8 STM has the same Canon RF lens mount . Some of the latest released cameras that are compatible with the Canon RF lenses are Canon R50 V , Canon R100 and Canon R50 .
Focal Range
Sigma 23mm F1.4 C is a prime lens with fixed focal lenght of 23mm which has an effective (full-frame 35mm equivalent) focal range of
36.8mm when used on a APS-C / DX format camera.
On the other hand, the Canon RF 28mm F2.8 STM is a prime lens with fixed focal lenght of 28mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 44.8mm .
