The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Samyang 135mm F2.0 ED UMC and the Tamron 70-180mm F2.8 Di 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. Tamron 70-180mm F2.8 Di is the longer of the two lenses at 149mm. The Samyang 135mm F2.0 ED UMC with a length of 122mm, is 27mm shorter. On the other hand, the Samyang 135mm F2.0 ED UMC has a larger diameter of 82mm compared to the Tamron 70-180mm F2.8 Di's 81mm diameter.
Below you can find a scaled side-by-side image of Samyang 135mm F2.0 ED UMC and Tamron 70-180mm F2.8 Di to get a better idea of how their sizes compare in real life.
Comparison image of the Samyang 135mm F2.0 ED UMC and the Tamron 70-180mm F2.8 Di 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. Tamron 70-180mm F2.8 Di weighs 815g, 1% (15g) lighter than the Samyang 135mm F2.0 ED UMC's weight of 830g.
Filter Threads
The Samyang 135mm F2.0 ED UMC has a filter size of 77mm whereas the Tamron 70-180mm F2.8 Di has a 67mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 77mm filters that we recommend you to consider for the Samyang 135mm F2.0 ED UMC:
And these are the 67mm filters that we recommend for the Tamron 70-180mm F2.8 Di:
Lens Mounts
The Samyang 135mm F2.0 ED UMC has the Canon EF-M lens mount whereas the Tamron 70-180mm F2.8 Di has the Sony E 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 Sony FX5 , Sony A7R VI and Sony A7 V for the Sony E Mount.
Canon EF , Four Thirds , Fujifilm X , Micro Four Thirds , Nikon F (FX) , Pentax KAF , Samsung NX , Sony Alpha and Sony E mounts.
Focal Range
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 1.6x crop, it provides a 35mm (FF) equivalent of
216mm .
On the other hand, the Tamron 70-180mm F2.8 Di has a focal range of 70-180mm and 2.6X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 105 - 270mm .
