I have a Copal 3 Shutter which has 58mm Threads - the same as 58mm filters. I'm toying with the idea of using a Lee Filters 58mm Filter Adapter to connect this shutter to a lens board and then using an empty filter and a Filter Adapter to fit to the front so that I can mount a Lee Filter holder on it and use this as the basis for utilising a number of small lenses. My idea is to mount the lenses on boards which will then slip into the Filter Holder. It seems to me could be a versatile way of using several smaller lenses without shutters. Has anyone tried this? If so does it work ok or are there any drawbacks to be aware of?