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 RF 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 18-50mm F2.8 DC DN C RF is the longer of the two lenses at 75mm. The Canon RF 28mm F2.8 STM with a length of 25mm, is 50mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 69mm.
Below you can find a scaled side-by-side image of Sigma 18-50mm F2.8 DC DN C RF 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 18-50mm F2.8 DC DN C RF 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, 60% (180g) lighter than the Sigma 18-50mm F2.8 DC DN C RF's weight of 300g.
Filter Threads
Both the Sigma 18-50mm F2.8 DC DN C RF and the Canon RF 28mm F2.8 STM have the same Filter thread size of 55mm .
Below are links to the 55mm filters that we recommend you to consider for these lenses:
Lens Mounts
Both the Sigma 18-50mm F2.8 DC DN C RF 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 18-50mm F2.8 DC DN C RF has a focal range of 18-50mm and
2.8X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
28.8-80mm 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 .
