Thanks for your replay Bill,I have a Hawkeye in shutter that I've managed to adopt to my Hasselblad.I've seen some photo's taken with meniscus lens and was hoping for getting the same result with the Hawkeye and will try the flipping of the lens soon.The shutter is pretty good,tested at 1/35 of a sec. and working out the f stops now.It is a remarkable little lens and shutter kit.