Hello friends,

today I picked up a pair of 72 mm Russian filters, yellow and orange - wanted these to put on my Fujica G690. So imagine my nice feelings, when I discovered that Fujinon has a 0.75 mm thread, and the filters are 1 mm! Do you have an idea what these were made for? I understand I should know it for better - my suspect is one from Tairs.

Cheers,
Zhenya