Lens Blur
The missing "Lens Blur" effect in After Effects is primarily due to Adobe replacing the legacy plugin with the more advanced Camera Lens Blur in newer versions . While this change was intended to offer more photorealistic results, it often triggers "Missing Effect" warnings when opening older project files. Why the Effect Is Missing
If the native Camera Lens Blur is too slow or you want a specific "missing" look for free: Fast Bokeh by Rowbyte lens blur after effects missing free
The Downside of the Native Effect
If you find the native Camera Lens Blur too slow or need different features, these are popular free options: Lens Blur The missing "Lens Blur" effect in