Refine tracking solution
by Community
Refine tracking solution is a Blender add-on that refines a motion solution by adjusting track weight. It lives in the Clip Editor under Tools → Solve → Refine Solution.
by Lazy3D·VFX
Images © Lazy3D. Used for product review; image policy.
Physical Weather FX stands out in the superhive library for packing weather setup, presets, object shaders, procedural rain and snow, sky, lighting, and lightning into one addon triggered from a single button. Worth knowing the constraints: only one weather system runs per project, and scenes with many high-poly models can hit performance drops, so low-poly collider proxies are recommended.
Physical Weather FX brings dynamic weather effects into Blender projects, covering rain, snow, wind, and fog. You control parameters like particle size, gravity, and velocity, and customizable presets cover conditions such as sunny days, storms, and snowy scenes. Setup is a single step: select the objects in your scene and press one button to have the weather system ready.
The addon's settings are interconnected, so adjustments to one aspect influence others. Increasing precipitation makes materials wetter, setting the temperature to a negative value switches rain to snow and shifts object shaders to snowy and icy textures, and the sky's appearance changes to match. Realistic Weather FX shaders transform objects in real time based on weather conditions, and realtime splashes appear where rain hits colliders, including animated objects.
Beyond precipitation, Physical Weather FX includes a procedural sky and lighting system with customizable cloud layers, wind-driven motion, and global illumination, plus a clouds scatter system, a volumetric clouds layer, lightning bolts, noise-driven fog, and procedural mist and horizon. Wind affects clouds, precipitation, and ripple direction in puddles. Only one Weather FX system can run per project, and low-poly collider proxies are recommended for smoother performance.
🔖Physical Weather Fx is best for blender artists building atmospheric or cinematic outdoor scenes with rain, snow, fog, and wind.
🔖Physical Weather Fx is completely free to download and use.
Physical Weather FX supports Blender 4.2 and newer, and it has also been tested in the 4.4 Beta and 4.5 Alpha builds. If you're on 4.2 or later, the addon is designed to run on your version. For pre-release builds like 4.4 Beta and 4.5 Alpha, behaviour can shift as those versions change, so treat that testing as a compatibility signal rather than a guarantee, and check the developer's page for the latest supported versions before installing.
Physical Weather FX allows only one Weather FX system per project. If you need weather across several scenes, the recommended approach is to split your work into multiple projects and add weather effects to each separately. This also helps sidestep the performance drops that can appear when a single project carries a lot of weather-driven geometry and effects. Plan your project structure around that one-system limit when you're organising larger productions.
Physical Weather FX can slow down in scenes with many high-poly models, where you may notice input delays or performance drops. Testing showed performance issues in a scene of around 130 objects totalling roughly 4 million polygons. To keep things fluid, optimise scene complexity, use low-poly proxies for rain colliders, and be mindful when combining advanced effects like volumetric clouds and noise-driven fog. Keeping the scene lean is the main way to maintain responsive playback.
Physical Weather FX sets up weather from a single button. You select the objects in your scene, press the button, and the weather system is created and ready to use. From there you can apply customizable presets for conditions like sunny days, storms, or snowy scenes, then adjust parameters such as particle size, gravity, and velocity. Because the settings are interconnected, changes to one aspect, like precipitation or temperature, automatically ripple through materials, shaders, and the sky.
Physical Weather FX is listed as free in this catalog. Licensing terms and availability can change over time, so the developer's page is the best place to confirm the current details before you download it or use it in a project. That page is also where you can verify exactly what's bundled, from weather shaders and procedural rain and snow to the sky and lighting system, and review any conditions attached to the release.
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Refine tracking solution is a Blender add-on that refines a motion solution by adjusting track weight. It lives in the Clip Editor under Tools → Solve → Refine Solution.

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