Is there any reason that I couldn't use live composite with ND filters? I've not thought it totally through yet as I've just ordered a set filters to try out, they are Amazon cheapies just to see if I like using them. I think I want some good ones, but don't know which way to turn there. Lee are so expensive yet I want square glass so I can use them on all my lenses. I'm shooting with both of the EM-5 models. Suggestions or opinions welcome!