The type of photography that you are planning to use is an important decision factor. Here we have evaluated the OM System 25mm F1.8 II and the Nikon Z 50mm F1.8 S 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. Nikon Z 50mm F1.8 S is the longer of the two lenses at 87mm. The OM System 25mm F1.8 II with a length of 41mm, is 46mm shorter. Besides being longer, the Nikon Z 50mm F1.8 S also has a larger diameter of 76mm compared to the OM System 25mm F1.8 II's 56mm diameter.
Below you can find a scaled side-by-side image of OM System 25mm F1.8 II and Nikon Z 50mm F1.8 S to get a better idea of how their sizes compare in real life.
Comparison image of the OM System 25mm F1.8 II and the Nikon Z 50mm F1.8 S 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, which means it is 259g (62%) lighter than the Nikon Z 50mm F1.8 S which has a weight of 415g.
Filter Threads
The OM System 25mm F1.8 II has a filter size of 46mm whereas the Nikon Z 50mm F1.8 S has a 62mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 46mm filters that we recommend you to consider for the OM System 25mm F1.8 II:
And these are the 62mm filters that we recommend for the Nikon Z 50mm F1.8 S:
Lens Mounts
The OM System 25mm F1.8 II has the Micro Four Thirds lens mount whereas the Nikon Z 50mm F1.8 S has the Nikon Z 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 Nikon ZR , Nikon Z5 II and RED Komodo-X 6K Z for the Nikon Z Mount.
Focal Range
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.
On the other hand, the Nikon Z 50mm F1.8 S is a prime lens with fixed focal lenght of 50mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 75mm .
