The type of photography that you are planning to use is an important decision factor. Here we have evaluated the OM SYSTEM 150-600mm f5-6.3 IS and the Sigma 50-200mm F4-5.6 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. OM SYSTEM 150-600mm f5-6.3 IS is the longer of the two lenses at 265mm. The Sigma 50-200mm F4-5.6 DC OS HSM with a length of 102mm, is 163mm shorter. Besides being longer, the OM SYSTEM 150-600mm f5-6.3 IS also has a larger diameter of 110mm compared to the Sigma 50-200mm F4-5.6 DC OS HSM's 74mm 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 50-200mm F4-5.6 DC OS HSM weighs 420g, 79% (1640g) lighter than the OM SYSTEM 150-600mm f5-6.3 IS's weight of 2060g.
Filter Threads
The OM SYSTEM 150-600mm f5-6.3 IS has a filter size of 95mm whereas the Sigma 50-200mm F4-5.6 DC OS HSM has a 55mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 95mm filters that we recommend you to consider for the OM SYSTEM 150-600mm f5-6.3 IS:
And these are the 55mm filters that we recommend for the Sigma 50-200mm F4-5.6 DC OS HSM:
Lens Mounts
The OM SYSTEM 150-600mm f5-6.3 IS has the Micro Four Thirds lens mount whereas the Sigma 50-200mm F4-5.6 DC OS HSM has the Sigma SA lens mount. Some of the latest released cameras that are compatible with these mounts are OM System OM-3 Astro, OM System OM-5 II and OM System OM-3 for the Micro Four Thirds Mount and Sigma SD1 Merrill, Sigma SD1 and for the Sigma SA Mount.
Sigma 50-200mm F4-5.6 DC OS HSM is also available in Canon EF , Pentax KAF3, Sony Alpha and Nikon F (DX) mounts.
Focal Range
OM SYSTEM 150-600mm f5-6.3 IS has a focal range of 150-600mm and
4.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
300-1200mm when used on a FourThirds format camera.
On the other hand, the Sigma 50-200mm F4-5.6 DC OS HSM has a focal range of 50-200mm and 4.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 75-300mm when used on a APS-C / DX format camera.
