Hi. I have an Oly OMD1 mark 2 with the pro lenses 7-14, 12-40 and 40-150. I am seeking advice on a single filter system that will fit all three lenses (using adapters). Is there such a thing especially as the small zoom has a bulbous lens. Appreciate advice/experiences. Thanks.
As far as I know, you can't fit a filter to a lens with a convex front element.
It depends on how many filters that you plan to use. I only use polarisers, and occasionally an ND. So I am happy with adapter rings to fit the lenes that I use. If I wanted to change filters more often, I would look for something with a magnetic holder to make changing filters faster. But such adapters are quite expensive, and I can't justify one for the amount os times that I need to change a filter quickly.