The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Samyang AF 35-150mm F2-2.8 L and the Olympus 12-100mm F4.0 IS Pro 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 AF 35-150mm F2-2.8 L is the longer of the two lenses at 155mm. The Olympus 12-100mm F4.0 IS Pro with a length of 117mm, is 38mm shorter. Besides being longer, the Samyang AF 35-150mm F2-2.8 L also has a larger diameter of 93mm compared to the Olympus 12-100mm F4.0 IS Pro's 78mm 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. Olympus 12-100mm F4.0 IS Pro weighs 561g, 53% (645g) lighter than the Samyang AF 35-150mm F2-2.8 L's weight of 1206g.
Filter Threads
The Samyang AF 35-150mm F2-2.8 L has a filter size of 82mm whereas the Olympus 12-100mm F4.0 IS Pro has a 72mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 82mm filters that we recommend you to consider for the Samyang AF 35-150mm F2-2.8 L:
And these are the 72mm filters that we recommend for the Olympus 12-100mm F4.0 IS Pro:
Lens Mounts
The Samyang AF 35-150mm F2-2.8 L has the Leica L lens mount whereas the Olympus 12-100mm F4.0 IS Pro has the Micro Four Thirds lens mount. Some of the latest released cameras that are compatible with these mounts are Leica SL3-P, Panasonic S1 II and Panasonic S1 IIE for the Leica L Mount and OM System OM-3 Astro, OM System OM-5 II and OM System OM-3 for the Micro Four Thirds Mount.
Focal Range
Samyang AF 35-150mm F2-2.8 L has a focal range of 35-150mm and
4.3X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
52.5 - 225mm.
On the other hand, the Olympus 12-100mm F4.0 IS Pro has a focal range of 12-100mm and 8.3X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 24-200mm when used on a FourThirds format camera.