The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 35-150mm F2.8-4 Di VC OSD 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. Sigma 50-150mm F2.8 EX DC OS HSM is the longer of the two lenses at 198mm. The Tamron 35-150mm F2.8-4 Di VC OSD with a length of 127mm, is 71mm shorter. Besides being longer, the Sigma 50-150mm F2.8 EX DC OS HSM also has a larger diameter of 86mm compared to the Tamron 35-150mm F2.8-4 Di VC OSD's 84mm 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. Tamron 35-150mm F2.8-4 Di VC OSD weighs 790g, which means it is 560g (41%) lighter than the Sigma 50-150mm F2.8 EX DC OS HSM which has a weight of 1350g.
Below you can find the dimension and weight table of the Telephoto Zoom Lenses in Canon EF Mount for size comparison purposes.
Telephoto Lenses in Canon EF Mount for Size Comparison
Filter Threads
Both the Tamron 35-150mm F2.8-4 Di VC OSD 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
Both the Tamron 35-150mm F2.8-4 Di VC OSD and the Sigma 50-150mm F2.8 EX DC OS HSM has the same Canon EF lens mount. Some of the latest released cameras that are compatible with the Canon EF lenses are Canon 1D X III, Canon 6D MII and Canon 5D MIV.
Tamron 35-150mm F2.8-4 Di VC OSD is also available in Nikon F (FX) mount.
Sigma 50-150mm F2.8 EX DC OS HSM is also available in Nikon F (DX) and Sigma SA mounts.
Focal Range
Tamron 35-150mm F2.8-4 Di VC OSD has a focal range of 35-150mm and
4.3X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of
56 - 240mm.
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.