The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon 50mm f1.4 USM and the Canon 28-105mm f3.5-4.5 II 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 28-105mm f3.5-4.5 II is the longer of the two lenses at 75mm. The Canon 50mm f1.4 USM with a length of 51mm, is 24mm shorter. On the other hand, the Canon 50mm f1.4 USM has a larger diameter of 74mm compared to the Canon 28-105mm f3.5-4.5 II's 72mm 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 50mm f1.4 USM weighs 290g, which means it is 85g (22%) lighter than the Canon 28-105mm f3.5-4.5 II which has a weight of 375g.
Filter Threads
Both the Canon 50mm f1.4 USM and the Canon 28-105mm f3.5-4.5 II have the same Filter thread size of 58mm.
Below are links to the 58mm filters that we recommend you to consider for these lenses:
Lens Mounts
Both the Canon 50mm f1.4 USM and the Canon 28-105mm f3.5-4.5 II has the same Canon EF lens mount. Some of the latest released cameras that are compatible with the Canon EF lenses are Blackmagic URSA 12K LF, Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K.
Focal Range
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.
On the other hand, the Canon 28-105mm f3.5-4.5 II has a focal range of 28-105mm and 3.8X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 44.8 - 168mm.