Had a pair of Ziess Diafuns 8x30 that were 15 + yrs old, I'm very rough on equiptment so when they started to fog up I was going to throw them away . Instead I sent them to Ziess to be repaired thinking it would be cheaper than a new pair. Ziess sent me a brand new pair of binoc's at no charge, kinda hard to believe in this day and age.