The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony 16-35mm F2.8 ZA SSM II and the OM System 25mm F1.8 II 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. Sony 16-35mm F2.8 ZA SSM II is the longer of the two lenses at 114mm. The OM System 25mm F1.8 II with a length of 41mm, is 73mm shorter. Besides being longer, the Sony 16-35mm F2.8 ZA SSM II also has a larger diameter of 83mm compared to the OM System 25mm F1.8 II's 56mm diameter.
Below you can find a scaled side-by-side image of Sony 16-35mm F2.8 ZA SSM II and OM System 25mm F1.8 II to get a better idea of how their sizes compare in real life.
Comparison image of the Sony 16-35mm F2.8 ZA SSM II and the OM System 25mm F1.8 II Size and Weight 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. OM System 25mm F1.8 II weighs 156g, 82% (716g) lighter than the Sony 16-35mm F2.8 ZA SSM II's weight of 872g.
Filter Threads
The Sony 16-35mm F2.8 ZA SSM II has a filter size of 77mm whereas the OM System 25mm F1.8 II has a 46mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 77mm filters that we recommend you to consider for the Sony 16-35mm F2.8 ZA SSM II:
And these are the 46mm filters that we recommend for the OM System 25mm F1.8 II:
Lens Mounts
The Sony 16-35mm F2.8 ZA SSM II has the Sony Alpha lens mount whereas the OM System 25mm F1.8 II has the Micro Four Thirds 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 OM System OM-3 Astro , OM System OM-5 II and OM System OM-3 for the Micro Four Thirds Mount.
Focal Range
Sony 16-35mm F2.8 ZA SSM II has a focal range of 16-35mm and
2.2X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
24 - 52.5mm .
On the other hand, the OM System 25mm F1.8 II is a prime lens with fixed focal lenght of 25mm which has an effective (full-frame 35mm equivalent) focal range of 50mm when used on a FourThirds format camera.
