The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Olympus M 25mm F1.8 and the Fujifilm 55-200mm F3.5-4.8 R LM OIS 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. Fujifilm 55-200mm F3.5-4.8 R LM OIS is the longer of the two lenses at 118mm. The Olympus M 25mm F1.8 with a length of 41mm, is 77mm shorter. Besides being longer, the Fujifilm 55-200mm F3.5-4.8 R LM OIS also has a larger diameter of 75mm compared to the Olympus M 25mm F1.8's 56mm 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. Olympus M 25mm F1.8 weighs 136g, which means it is 444g (76%) lighter than the Fujifilm 55-200mm F3.5-4.8 R LM OIS which has a weight of 580g.
Filter Threads
The Olympus M 25mm F1.8 has a filter size of 46mm whereas the Fujifilm 55-200mm F3.5-4.8 R LM OIS 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 Olympus M 25mm F1.8:
And these are the 62mm filters that we recommend for the Fujifilm 55-200mm F3.5-4.8 R LM OIS:
Lens Mounts
The Olympus M 25mm F1.8 has the Micro Four Thirds lens mount whereas the Fujifilm 55-200mm F3.5-4.8 R LM OIS has the Fujifilm X 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 Fujifilm X-T30 III, Fujifilm X-E5 and Fujifilm X-M5 for the Fujifilm X Mount.
Focal Range
Olympus M 25mm F1.8 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 Fujifilm 55-200mm F3.5-4.8 R LM OIS has a focal range of 55-200mm and 3.6X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 82.5-300mm when used on a APS-C / DX format camera.