The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon EF-S 18-55mm F4-5.6 IS STM and the Canon 50mm f1.4 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 EF-S 18-55mm F4-5.6 IS STM is the longer of the two lenses at 62mm. The Canon 50mm f1.4 USM with a length of 51mm, is 11mm shorter. On the other hand, the Canon 50mm f1.4 USM has a larger diameter of 74mm compared to the Canon EF-S 18-55mm F4-5.6 IS STM's 67mm 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-S 18-55mm F4-5.6 IS STM weighs 215g, which means it is 75g (25%) lighter than the Canon 50mm f1.4 USM which has a weight of 290g.
Both the Canon EF-S 18-55mm F4-5.6 IS STM and the Canon 50mm f1.4 USM have the same Filter thread size of 58mm.
Below are links to the 58mm filters that we recommend you to consider for these lenses:
The Canon EF-S 18-55mm F4-5.6 IS STM has the Canon EF-S lens mount whereas the Canon 50mm f1.4 USM has the Canon EF lens mount. Some of the latest released cameras that are compatible with these mounts are Canon T8i, Canon 90D and Canon SL3 for the Canon EF-S Mount and Canon 1D X III, Canon 6D MII and Canon 5D MIV for the Canon EF Mount.
Canon EF-S 18-55mm F4-5.6 IS STM has a focal range of 18-55mm and 3.1X
zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 28.8-88mm
when used on a APS-C / DX format camera.
On the other hand, the Canon 50mm f1.4 USM 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.