Dr David Hall
Member
- Joined
- Jun 10, 2004
- Messages
- 129
- Format
- 35mm RF
At an estate sale I picked up several B50 fliters as I have an older lens that uses them. Looking at the group I found one that says it;s made by Samigon and is marked B50 and DUTO. When viewed by holding to the light it appears to have concentric circles in the lens glass. Does anyone know what this is or might do to an exposure if this were mounted????? Thanks for any help.