The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Fujifilm 18-135mm F3.5-5.6 R OIS and the Fujifilm 18mm F2 R 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 18-135mm F3.5-5.6 R OIS is the longer of the two lenses at 98mm. The Fujifilm 18mm F2 R with a length of 41mm, is 57mm shorter. Besides being longer, the Fujifilm 18-135mm F3.5-5.6 R OIS also has a larger diameter of 76mm compared to the Fujifilm 18mm F2 R's 65mm diameter.
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Below you can find a scaled side-by-side image of Fujifilm 18-135mm F3.5-5.6 R OIS and Fujifilm 18mm F2 R to get a better idea of how their sizes compare in real life.
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 18mm F2 R weighs 116g, 76% (374g) lighter than the Fujifilm 18-135mm F3.5-5.6 R OIS's weight of 490g.
Lens Mounts
Both the Fujifilm 18-135mm F3.5-5.6 R OIS and the Fujifilm 18mm F2 R has the same Fujifilm X lens mount. Some of the latest released cameras that are compatible with the Fujifilm X lenses are Fujifilm X-S20, Fujifilm X-T5 and Fujifilm X-H2.
Focal Range
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.
On the other hand, the Fujifilm 18mm F2 R is a prime lens with fixed focal lenght of 18mm which has an effective (full-frame 35mm equivalent) focal range of 27mm when used on a APS-C / DX format camera.