This is Fujifilms second version.
Internally, its the same.
Why Is It So Good?

Lifewire / Charlie Sorrel
Optically, the 27mm pancake is just great.
The photos you take with this lens will be indistinguishable from those taken with bigger, fancier lenses.
In fact, they may be much better because any photo is better than no photos, right?

Lifewire / Charlie Sorrel
The single biggest advantage of this lens is its size.
Dangling from a strap, the lens doesnt poke out enough to get in the way.
The 27mm focal length is also a great all-rounder.

An image captured with the Fujifilm 27 mm pancake lens.Lifewire / Charlie Sorrel
But rather than being a compromise, its surprisingly practical in many (but not allsee below) cases.
Its also absurdly lightweight (84 grams or 3oz), which adds to the portability.
Another pro is the WRweather-resistantsealing, which keeps out dust, drizzle, sea-spray, and the like.
My last favorite feature is the aperture ring.
On most Fujifilm bodies, you’re free to set the aperture from an on-camera dial.
And the Bad?
The worst part of this lens is its autofocus, which is unchanged since the original version.
Compared to an old AF lens on a DSLR, its quick and quiet.
But compared to the newer Fujifilm lenses, its not great.
But as I said, this is relative.
Your subjects will probably never hear it.
But thats enough of the theory.
The proof of this little lens is in the fact that I use it so much despite its flaws.
The autofocus is still great, and the results are just stellar.