A modder, known as @maximilian_ on social media, has released a modification for Monster Hunter Rise that eliminates the game's lens distortion effect, leading to a more refined visual experience.  The modder commented that disabling the effect removed the "super weird soft image," suggesting the original lens distortion created a blurred or less desirable look.

About this Mod:

This REFramework script disables the lens distortion setting, resulting in a sharper image.  The mod author also mentions disabling film grain, though the impact of this change is uncertain.

While an option to disable lens distortion exists within the game's config.ini file, altering it seems to have no effect, prompting the modder to develop this script-based solution.

Mod Comparison:

Default Game Image

Image with Mod Applied

Other users have also suggested an alternative method: disabling volumetric fog within the configuration files.