The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon 28mm F3.5 Macro and the Canon 50mm f2.5 Macro 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 50mm f2.5 Macro is the longer of the two lenses at 63mm. The Canon 28mm F3.5 Macro with a length of 46mm, is 17mm shorter. Besides being longer, the Canon 50mm f2.5 Macro also has a larger diameter of 68mm compared to the Canon 28mm F3.5 Macro'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 28mm F3.5 Macro weighs 130g, which means it is 150g (53%) lighter than the Canon 50mm f2.5 Macro which has a weight of 280g.
Lens Mounts
The Canon 28mm F3.5 Macro has the Canon EF-M lens mount whereas the Canon 50mm f2.5 Macro 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 28mm F3.5 Macro is a prime lens with fixed focal lenght of 28mm which has an effective (full-frame 35mm equivalent) focal range of
44.8mm when used on a APS-C / DX format camera.
On the other hand, the Canon 50mm f2.5 Macro 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.