The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 70-300mm F4-5.6 DG and the Sigma 70-300mm F4-5.6 DG OS 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 70-300mm F4-5.6 DG OS is the longer of the two lenses at 126mm. The Sigma 70-300mm F4-5.6 DG with a length of 122mm, is 4mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 77mm.
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 70-300mm F4-5.6 DG weighs 550g, which means it is 60g (9%) lighter than the Sigma 70-300mm F4-5.6 DG OS which has a weight of 610g.
Filter Threads
Both the Sigma 70-300mm F4-5.6 DG and the Sigma 70-300mm F4-5.6 DG OS have the same Filter thread size of 58mm.
Below are links to the 58mm filters that we recommend you to consider for these lenses:
Lens Mounts
The Sigma 70-300mm F4-5.6 DG has the Pentax KAF lens mount whereas the Sigma 70-300mm F4-5.6 DG OS has the Pentax KAF3 lens mount. Some of the latest released cameras that are compatible with these mounts are Pentax K-3 III Monochrome, Pentax KF and Pentax K-3 III for the Pentax KAF Mount and Pentax K-3 III Monochrome, Pentax KF and Pentax K-3 III for the Pentax KAF3 Mount.
Sigma 70-300mm F4-5.6 DG is also available in Canon EF , Nikon F (FX), Pentax KAF, Sony Alpha, Sigma SA, Canon EF, Nikon F (FX), Sony Alpha and Sigma SA mounts.
Sigma 70-300mm F4-5.6 DG OS is also available in Canon EF , Nikon F (FX), Sony Alpha and Sigma SA mounts.
Focal Range
Both lenses have the same focal range of
70-300mm and the fastest aperture of
F4.0 - F5.6.