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 50mm F1.8 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 50mm F1.8 STM with a length of 41mm, is 34mm 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 50mm F1.8 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 50mm F1.8 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 50mm F1.8 STM weighs 160g, 46% (140g) lighter than the Sigma 18-50mm F2.8 DC DN C RF's weight of 300g.
Filter Threads
The Sigma 18-50mm F2.8 DC DN C RF has a filter size of 55mm whereas the Canon RF 50mm F1.8 STM has a 43mm 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 RF:
And these are the 43mm filters that we recommend for the Canon RF 50mm F1.8 STM:
Lens Mounts
Both the Sigma 18-50mm F2.8 DC DN C RF and the Canon RF 50mm F1.8 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 50mm F1.8 STM is a prime lens with fixed focal lenght of 50mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 80mm .
