The KONO!RAMA plays off of a very cool, forgotten idea and adds it to Instax film.

Many years ago, photographers put color filters in front of their lenses. It delivered a fun effect if it wasn’t correcting for the lighting. And that’s what the KONO!RAMA is doing in a far more innovative way. The front lens elements of many cameras are various sizes. To get around that problem, you just place the KONO!RAMA right in front of the film pack before loading it up. 
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https://www.thephoblographer.com/2020/09/18/konorama-the-most-exciting-thing-in-instant-photography-right-now/