Thank you. Is it 'best get' as in you think Thornton Pickard roller shutters are accurate and the only ones available? I still have my half-plate and TP shutter and the shutter only goes to 1/90th sec at its fastest speed and 1/15th at its slowest, not really usable even for an f/8 lens wide open in sunlight, but I suppose it could be cobbled together on a lens board. I only ever used it stopped all they way down before and in 'T' mode, but thats no help if I want short shutter speeds and narrow DOF and lack of movement in the picture.