Country Parson
Top Veteran
- Location
- North Carolina
- Name
- Dan
I am confused by the designations for screw mount lenses. I bought by mistake an adapter that says M42. But when I put my calipers into the threads it reads just shy of 39mm. Is that not the size for Leica screw mounts? If so why does it say M42 and is being sold as a Leica adapter? Anybody understand this? I thought Leica screw mount adapters said M39.