The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Olympus ED 35-100mm f2.0 and the Sigma 50-150mm F2.8 EX DC OS HSM 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. Olympus ED 35-100mm f2.0 is the longer of the two lenses at 214mm. The Sigma 50-150mm F2.8 EX DC OS HSM with a length of 198mm, is 16mm shorter. Besides being longer, the Olympus ED 35-100mm f2.0 also has a larger diameter of 97mm compared to the Sigma 50-150mm F2.8 EX DC OS HSM's 86mm 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. Sigma 50-150mm F2.8 EX DC OS HSM weighs 1350g, 18% (300g) lighter than the Olympus ED 35-100mm f2.0's weight of 1650g.
Filter Threads
Both the Olympus ED 35-100mm f2.0 and the Sigma 50-150mm F2.8 EX DC OS HSM have the same Filter thread size of 77mm.
Below are links to the 77mm filters that we recommend you to consider for these lenses:
Lens Mounts
The Olympus ED 35-100mm f2.0 has the Four Thirds lens mount whereas the Sigma 50-150mm F2.8 EX DC OS HSM has the Canon EF lens mount. Some of the latest released cameras that are compatible with these mounts are Olympus E-5, Olympus E-600 and Olympus E-620 for the Four Thirds Mount and Canon T8i, Canon 90D and Canon SL3 for the Canon EF Mount.
Sigma 50-150mm F2.8 EX DC OS HSM is also available in Nikon F (DX) and Sigma SA mounts.
Focal Range
Olympus ED 35-100mm f2.0 has a focal range of 35-100mm and
2.9X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
70-200mm when used on a FourThirds format camera.
On the other hand, the Sigma 50-150mm F2.8 EX DC OS HSM has a focal range of 50-150mm and 3.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 80-240mm when used on a APS-C / DX format camera.