The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony 70-300mm F4.5-5.6 G SSM II 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 Sony 70-300mm F4.5-5.6 G SSM II with a length of 136mm, is 62mm shorter. Besides being longer, the Sigma 50-150mm F2.8 EX DC OS HSM also has a larger diameter of 86mm compared to the Sony 70-300mm F4.5-5.6 G SSM II's 83mm 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. Sony 70-300mm F4.5-5.6 G SSM II weighs 750g, which means it is 600g (44%) lighter than the Sigma 50-150mm F2.8 EX DC OS HSM which has a weight of 1350g.
Filter Threads
The Sony 70-300mm F4.5-5.6 G SSM II has a filter size of 62mm whereas the Sigma 50-150mm F2.8 EX DC OS HSM 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 Sony 70-300mm F4.5-5.6 G SSM II:
And these are the 77mm filters that we recommend for the Sigma 50-150mm F2.8 EX DC OS HSM:
Lens Mounts
The Sony 70-300mm F4.5-5.6 G SSM II has the Sony Alpha lens mount whereas the Sigma 50-150mm F2.8 EX DC OS HSM has the Sigma SA lens mount. Some of the latest released cameras that are compatible with these mounts are Sony A99 II, Sony A68 and Sony A77 II for the Sony Alpha Mount and Sigma SD1 Merrill, Sigma SD1 and for the Sigma SA Mount.
Sigma 50-150mm F2.8 EX DC OS HSM is also available in Canon EF and Nikon F (DX) mounts.
Focal Range
Sony 70-300mm F4.5-5.6 G SSM II has a focal range of 70-300mm 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
105 - 450mm.
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 75-225mm when used on a APS-C / DX format camera.
