jay_chartwell Posted April 2, 2007 Share Posted April 2, 2007 I couldn't find this mentioned anywhere here but I don't think my Mamiya TLR 1804.5 has any filter threads. A 46mm is too small and a 49mm is too large. It doeshave what appear to be the grooves inside the barrel (terminology?) like somelens hoods have but I could find no "lead-in" groove to indicate threads. Does anyone know if there were 180s made without threads? If there are no threads, what's the best choice for attaching a filter? Link to comment Share on other sites More sharing options...
dave_s Posted April 2, 2007 Share Posted April 2, 2007 Jay, the 180 has a 49mm thread. You need to unscrew and remove the chrome ring in the front of the lens barrel, which is a 'stiffener' to prevent the thin metal from denting or bending. Link to comment Share on other sites More sharing options...
steve_graff Posted April 3, 2007 Share Posted April 3, 2007 Put a thick rubber band around the chrome ring to remove it. Duct tape can be used as a second choice, but then your untaped ducks may fly away! Same for 250mm lens. Link to comment Share on other sites More sharing options...
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