The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon RF 75-300mm f4.0-5.6 and the Samyang 135mm F2.0 ED UMC 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 RF 75-300mm f4.0-5.6 is the longer of the two lenses at 146mm. The Samyang 135mm F2.0 ED UMC with a length of 122mm, is 24mm shorter. On the other hand, the Samyang 135mm F2.0 ED UMC has a larger diameter of 82mm compared to the Canon RF 75-300mm f4.0-5.6's 71mm diameter.
Below you can find a scaled side-by-side image of Canon RF 75-300mm f4.0-5.6 and Samyang 135mm F2.0 ED UMC to get a better idea of how their sizes compare in real life.
Comparison image of the Canon RF 75-300mm f4.0-5.6 and the Samyang 135mm F2.0 ED UMC Size and Weight 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 RF 75-300mm f4.0-5.6 weighs 507g, which means it is 323g (38%) lighter than the Samyang 135mm F2.0 ED UMC which has a weight of 830g.
Filter Threads
The Canon RF 75-300mm f4.0-5.6 has a filter size of 58mm whereas the Samyang 135mm F2.0 ED UMC has a 77mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 58mm filters that we recommend you to consider for the Canon RF 75-300mm f4.0-5.6:
And these are the 77mm filters that we recommend for the Samyang 135mm F2.0 ED UMC:
Lens Mounts
The Canon RF 75-300mm f4.0-5.6 has the Canon RF lens mount whereas the Samyang 135mm F2.0 ED UMC has the Sony Alpha lens mount . Some of the latest released cameras that are compatible with these mounts are Canon R6 V , Canon R6 III and Canon C50 for the Canon RF Mount and
Canon EF , Canon EF-M , Four Thirds , Fujifilm X , Micro Four Thirds , Nikon F (FX) , Pentax KAF , Samsung NX and Sony E mounts.
Focal Range
Canon RF 75-300mm f4.0-5.6 has a focal range of 75-300mm and
4.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of
120 - 480mm .
On the other hand, the Samyang 135mm F2.0 ED UMC is a prime lens with fixed focal lenght of 135mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 202.5mm .
