Before we dive into the buttons and sliders, we need to clarify a technical distinction. True long exposure (keeping a shutter open for 1-30 seconds) isn’t possible in real-time gaming because game engines render frames sequentially.
If real-time shaders are too buggy or cause artifacts, the absolute best "ReShade Long Exposure" is actually done in post-production using a ReShade feature: reshade long exposure
This is the most critical setting. It dictates how long the "shutter" stays open. Before we dive into the buttons and sliders,