The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon EF-M 18-150mm F3.5-6.3 and the Canon 75-300mm f4.0-5.6 III USM 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 75-300mm f4.0-5.6 III USM is the longer of the two lenses at 122mm. The Canon EF-M 18-150mm F3.5-6.3 with a length of 87mm, is 35mm shorter. Besides being longer, the Canon 75-300mm f4.0-5.6 III USM also has a larger diameter of 71mm compared to the Canon EF-M 18-150mm F3.5-6.3's 61mm diameter.
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-M 18-150mm F3.5-6.3 weighs 300g, which means it is 180g (37%) lighter than the Canon 75-300mm f4.0-5.6 III USM which has a weight of 480g.
Filter Threads
The Canon EF-M 18-150mm F3.5-6.3 has a filter size of 55mm whereas the Canon 75-300mm f4.0-5.6 III USM has a 58mm 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 Canon EF-M 18-150mm F3.5-6.3:
And these are the 58mm filters that we recommend for the Canon 75-300mm f4.0-5.6 III USM:
Lens Mounts
The Canon EF-M 18-150mm F3.5-6.3 has the Canon EF-M lens mount whereas the Canon 75-300mm f4.0-5.6 III USM has the Canon EF lens mount. Some of the latest released cameras that are compatible with these mounts are Canon M50 II, Canon M200 and Canon M6 MII for the Canon EF-M Mount and Blackmagic URSA 12K LF, Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K for the Canon EF Mount.
Focal Range
Canon EF-M 18-150mm F3.5-6.3 has a focal range of 18-150mm and
8.3X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
28.8-240mm when used on a APS-C / DX format camera.
On the other hand, the Canon 75-300mm f4.0-5.6 III USM has a focal range of 75-300mm and 4.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 120 - 480mm.