Hello friends,
My Peak enlarging focuser (I) comes with a blue filter that can screw onto the e yepiece. The minimal instructions, translated in the usual stilted style from th e Japaneese, calls it a "BG filter". Furthermore, the instructions explain the f ilter as follows:
"When you want to obtain more correct enlarging of the black and white film, use the focuser after fitting the BG filter to its eyepiece. The use of this filter will permit the coincidence between the wavelength sensitive to your eyes and t hat to be enlarged."
Ok, I don't get it!
What does "BG" stand for and what is this all about?
Thanks as usual for all your great help...
Scott
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