The Firing Line Forums - View Single Post - Loss of clarity from storing their scopes in dark safes or closets?

wogpotter · December 2, 2012, 09:34 AM

Thorium, or its relatives must be pretty much a Pentax/Takumar optics thing, most other companies in the photographic business use various forms of magnesium flouride-based coatings materials.

December 2, 2012, 09:34 AM	#16
wogpotter Senior Member Join Date: September 27, 2004 Posts: 4,811	Thorium, or its relatives must be pretty much a Pentax/Takumar optics thing, most other companies in the photographic business use various forms of magnesium flouride-based coatings materials. __________________ Allan Quatermain: “Automatic rifles. Who in God's name has automatic rifles”? Elderly Hunter: “That's dashed unsporting. Probably Belgium.”