Reshade Long Exposure May 2026

For static scenes (waterfalls, clouds), you don't need to move. For Light Trails (cars), you need objects to move through the frame while the camera is locked.

Diagnosis: The Exposure or Intensity slider is too high, OR you are blending 32 frames with Additive blending. Fix: Find the Tonemap or Exposure slider inside your Long Exposure shader. Reduce it until the highlights (sky, lights) return to white, not nuclear white. reshade long exposure

The most direct method uses a custom ReShade shader that reads the previous frame buffer and blends it with the current frame. For static scenes (waterfalls, clouds), you don't need

Formula: [ Output = (Current \times \alpha) + (Previous \times (1 - \alpha)) ] where (\alpha) is a small weight (e.g., 0.1) and the process repeats recursively over dozens of frames. Fix: Find the Tonemap or Exposure slider inside

Implementation in ReShade (Pseudo-HLSL):

// Custom shader technique
float blendFactor = 0.05; // 5% new frame, 95% old accumulation
float4 curr = tex2D(ReShade::BackBuffer, texcoord);
float4 prev = tex2D(prevFrameBuffer, texcoord);
return lerp(prev, curr, blendFactor);