Quote Originally Posted by Diapositivo View Post
OK but then, why is it called "soft"? It shouldn't make the shutter release any softer, should it? What usefulness can it provide in real use?
Marketing.

I got one with one of my bodies, found it awkward and prone to snagging on things, so don't use it. There's an analogous accessory for guns called a "trigger shoe".

If you like them, if they make the shutter button feel better to you, then they're a good thing. I do use a trigger shoe on one of my guns, a rebarreled Mauser with a very narrow trigger - it gives a better feel for when it breaks.