The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Rokinon 85mm F1.4 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 Rokinon 85mm F1.4 with a length of 75mm, is 40mm shorter. On the other hand, the Rokinon 85mm F1.4 has a larger diameter of 78mm 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, 22% (119g) lighter than the Rokinon 85mm F1.4's weight of 539g.
Filter Threads
The Rokinon 85mm F1.4 has a filter size of 72mm whereas the Canon 90-300mm f4.5-5.6 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 72mm filters that we recommend you to consider for the Rokinon 85mm F1.4:
And these are the 58mm filters that we recommend for the Canon 90-300mm f4.5-5.6 USM:
Lens Mounts
Both the Rokinon 85mm F1.4 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.
Rokinon 85mm F1.4 is also available in the Four Thirds , Pentax KAF, Sony Alpha, Samsung NX and Nikon F (FX) mounts.
Focal Range
Rokinon 85mm F1.4 is a prime lens with fixed focal lenght of 85mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of
136mm.
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.
