The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon RF 50mm F1.8 STM and the Canon EF 50mm f/1.8 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. Canon RF 50mm F1.8 STM is the longer of the two lenses at 41mm. The Canon EF 50mm f/1.8 STM with a length of 39mm, is 2mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 69mm.
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Below you can find a scaled side-by-side image of Canon RF 50mm F1.8 STM and Canon EF 50mm f/1.8 STM to get a better idea of how their sizes compare in real life.
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 EF 50mm f/1.8 STM weighs 159g, 0% (1g) lighter than the Canon RF 50mm F1.8 STM's weight of 160g.
Filter Threads
The Canon RF 50mm F1.8 STM has a filter size of 43mm whereas the Canon EF 50mm f/1.8 STM has a 49mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 43mm filters that we recommend you to consider for the Canon RF 50mm F1.8 STM:
And these are the 49mm filters that we recommend for the Canon EF 50mm f/1.8 STM:
Lens Mounts
The Canon RF 50mm F1.8 STM has the Canon RF lens mount whereas the Canon EF 50mm f/1.8 STM has the Canon EF lens mount. Some of the latest released cameras that are compatible with these mounts are Canon R100, Canon R8 and Canon R50 for the Canon RF Mount and Canon 1D X III, Canon 6D MII and Canon 5D MIV for the Canon EF Mount.
Focal Range
Both lenses have the same focal range of
50mm and the fastest aperture of
F1.8.