Hello,
I have a 9x12 plate Camera which is equipped (I think as an extra) with a newton-Finder with a sqaure front lens with hair cross an a deep blue back lens.
This type I also find as acessory in a 1925 Ica Catalouge, called "Newton-Sucher Ideal"
Does anyone know why they used this dark blue glass? it makes the use of the findet difficult in low light I think... Should it be a "BW viewing filter" like there is one from Wratten, or what is the purpose?
thanks in advance!
Bookmarks