Talk:Supersonic Wave Filter

Shadow causing particles

Hi, I've added bits seeking to clarify what is actually seen on the image and why the SSWF is quite effective.

Any dust particles you see in dSLR images are not actually images of the dust as such, no, they are the shadows from such particles. The SSWF also increases the distance of the particle away from the image forming surface thus weakening any shadows. This 'happy accident' is a secondary feature of how it works.

I think the original writer knew the above already but I just thought that needed clarifying a touch. Feel free to re-write my clumsy phraseolgy or otherwise.