Have this nice 180mm lens chrome (NOT the Super) for a Mamiya C330
and I thought the filter size was 49mm as per the manual but my step-up
ring 49-52 doesn't fit...
The nice FAQ at http://www.btinternet.com/~g.a.patte...html#Heading63
says that some models have a chrome guard on the threads and for sure my lens has
a chrome ring. Do I have to remove it to use my step-up ring?