The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 50mm F1.4 EX DG HSM and the Olympus ED 14-35mm f2.0 SWD 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 14-35mm f2.0 SWD is the longer of the two lenses at 123mm. The Sigma 50mm F1.4 EX DG HSM with a length of 68mm, is 55mm shorter. Besides being longer, the Olympus ED 14-35mm f2.0 SWD also has a larger diameter of 86mm compared to the Sigma 50mm F1.4 EX DG HSM's 85mm 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 50mm F1.4 EX DG HSM weighs 505g, which means it is 410g (44%) lighter than the Olympus ED 14-35mm f2.0 SWD which has a weight of 915g.
Filter Threads
Both the Sigma 50mm F1.4 EX DG HSM and the Olympus ED 14-35mm f2.0 SWD 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 Sigma 50mm F1.4 EX DG HSM and the Olympus ED 14-35mm f2.0 SWD has the same Four Thirds lens mount. Some of the latest released cameras that are compatible with the Four Thirds lenses are Olympus E-5, Olympus E-600 and Olympus E-620.
Sigma 50mm F1.4 EX DG HSM is also available in the Canon EF , Pentax KAF3, Sony Alpha, Sigma SA and Nikon F (FX) mounts.
Focal Range
Sigma 50mm F1.4 EX DG HSM is a prime lens with fixed focal lenght of 50mm.
On the other hand, the Olympus ED 14-35mm f2.0 SWD has a focal range of 14-35mm and 2.5X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 28-70mm when used on a FourThirds format camera.
