The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon RF-S 18-45mm f4.5-6.3 IS and the Canon EF-M 15-45mm F3.5-6.3 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 EF-M 15-45mm F3.5-6.3 is the longer of the two lenses at 45mm. The Canon RF-S 18-45mm f4.5-6.3 IS with a length of 44mm, is 1mm shorter. On the other hand, the Canon RF-S 18-45mm f4.5-6.3 IS has a larger diameter of 69mm compared to the Canon EF-M 15-45mm F3.5-6.3's 61mm diameter.
Below you can find a scaled side-by-side image of Canon RF-S 18-45mm f4.5-6.3 IS and Canon EF-M 15-45mm F3.5-6.3 to get a better idea of how their sizes compare in real life.
Comparison image of the Canon RF-S 18-45mm f4.5-6.3 IS and the Canon EF-M 15-45mm F3.5-6.3 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.
Filter Threads
Both the Canon RF-S 18-45mm f4.5-6.3 IS and the Canon EF-M 15-45mm F3.5-6.3 have the same Filter thread size of 49mm .
Below are links to the 49mm filters that we recommend you to consider for these lenses:
Lens Mounts
The Canon RF-S 18-45mm f4.5-6.3 IS has the Canon RF lens mount whereas the Canon EF-M 15-45mm F3.5-6.3 has the Canon EF-M lens mount . Some of the latest released cameras that are compatible with these mounts are Canon R50 V , Canon R100 and Canon R50 for the Canon RF Mount and
Focal Range
Canon RF-S 18-45mm f4.5-6.3 IS has a focal range of 18-45mm and
2.5X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
28.8-72mm when used on a APS-C / DX format camera.
On the other hand, the Canon EF-M 15-45mm F3.5-6.3 has a focal range of 15-45mm and 3.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 22.5-67.5mm when used on a APS-C / DX format camera.
