The type of photography that you are planning to use is an important decision factor. Here we have evaluated the OM System 40-150mm F4.0 PRO 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. Samyang 135mm F2.0 ED UMC is the longer of the two lenses at 122mm. The OM System 40-150mm F4.0 PRO with a length of 99mm, is 23mm shorter. Besides being longer, the Samyang 135mm F2.0 ED UMC also has a larger diameter of 82mm compared to the OM System 40-150mm F4.0 PRO's 69mm diameter.
Below you can find a scaled side-by-side image of OM System 40-150mm F4.0 PRO and Samyang 135mm F2.0 ED UMC to get a better idea of how their sizes compare in real life.
Comparison image of the OM System 40-150mm F4.0 PRO 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. OM System 40-150mm F4.0 PRO weighs 382g, which means it is 448g (53%) lighter than the Samyang 135mm F2.0 ED UMC which has a weight of 830g.
Filter Threads
The OM System 40-150mm F4.0 PRO has a filter size of 62mm 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 62mm filters that we recommend you to consider for the OM System 40-150mm F4.0 PRO:
And these are the 77mm filters that we recommend for the Samyang 135mm F2.0 ED UMC:
Lens Mounts
Both the OM System 40-150mm F4.0 PRO and the Samyang 135mm F2.0 ED UMC has the same Micro Four Thirds lens mount . Some of the latest released cameras that are compatible with the Micro Four Thirds lenses are OM System OM-3 Astro , OM System OM-5 II and OM System OM-3 .
Canon EF , Canon EF-M , Four Thirds , Fujifilm X , Nikon F (FX) , Pentax KAF , Samsung NX , Sony Alpha and Sony E mounts.
Focal Range
OM System 40-150mm F4.0 PRO has a focal range of 40-150mm and
3.8X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
80-300mm when used on a FourThirds format camera.
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 2.0x crop, it provides a 35mm (FF) equivalent of 270mm .
