The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Olympus 12-100mm F4.0 IS Pro and the Fujifilm 18-135mm F3.5-5.6 R 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. Olympus 12-100mm F4.0 IS Pro is the longer of the two lenses at 117mm. The Fujifilm 18-135mm F3.5-5.6 R OIS with a length of 98mm, is 19mm shorter. Besides being longer, the Olympus 12-100mm F4.0 IS Pro also has a larger diameter of 78mm compared to the Fujifilm 18-135mm F3.5-5.6 R OIS's 76mm diameter.
Below you can find a scaled side-by-side image of Olympus 12-100mm F4.0 IS Pro and Fujifilm 18-135mm F3.5-5.6 R OIS to get a better idea of how their sizes compare in real life.
Comparison image of the Olympus 12-100mm F4.0 IS Pro and the Fujifilm 18-135mm F3.5-5.6 R OIS 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. Fujifilm 18-135mm F3.5-5.6 R OIS weighs 490g, 12% (71g) lighter than the Olympus 12-100mm F4.0 IS Pro's weight of 561g.
Filter Threads
The Olympus 12-100mm F4.0 IS Pro has a filter size of 72mm whereas the Fujifilm 18-135mm F3.5-5.6 R OIS has a 67mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 72mm filters that we recommend you to consider for the Olympus 12-100mm F4.0 IS Pro:
And these are the 67mm filters that we recommend for the Fujifilm 18-135mm F3.5-5.6 R OIS:
Lens Mounts
The Olympus 12-100mm F4.0 IS Pro has the Micro Four Thirds lens mount whereas the Fujifilm 18-135mm F3.5-5.6 R 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 12-100mm F4.0 IS Pro has a focal range of 12-100mm and
8.3X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
24-200mm when used on a FourThirds format camera.
On the other hand, the Fujifilm 18-135mm F3.5-5.6 R OIS has a focal range of 18-135mm and 7.5X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 27-202.5mm when used on a APS-C / DX format camera.
