The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon 100mm f2.0 USM and the Canon 90-300mm f4.5-5.6 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 90-300mm f4.5-5.6 USM is the longer of the two lenses at 115mm. The Canon 100mm f2.0 USM with a length of 74mm, is 41mm shorter. On the other hand, the Canon 100mm f2.0 USM has a larger diameter of 75mm compared to the Canon 90-300mm f4.5-5.6 USM's 71mm 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 90-300mm f4.5-5.6 USM weighs 420g, 8% (40g) lighter than the Canon 100mm f2.0 USM's weight of 460g.
Filter Threads
Both the Canon 100mm f2.0 USM and the Canon 90-300mm f4.5-5.6 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:
Lens Mounts
Both the Canon 100mm f2.0 USM and the Canon 90-300mm f4.5-5.6 USM 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 100mm f2.0 USM is a prime lens with fixed focal lenght of 100mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of
160mm.
On the other hand, the Canon 90-300mm f4.5-5.6 USM has a focal range of 90-300mm and 3.3X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 144 - 480mm.
