Hi there. I am a happy Olympus OM-D E-M5II owner and just was in contact with a nice lady from breakthrough.photography. She explained to me that their filters are made for quality photographers and therefore are no good for my setup. She said that the m43 system is useless (her words) for landscape and/or long exposure photography because of the missing ISO100 and for other reasons. The dynamic range and sharpness are not good enough for that kind of photography she said. So here's my question: do you agree? Is she right or wrong?