Over deze norm
Specifies a standard series of diameter sizes for the front part of a lens barrel and a standard series of thread sizes for the same front barrel. The data are applicable to lenses of cameras, enlargers and similar equipment. They are meant to simplify the production and storage of such auxiliaries as screw-in filters.
|Engelse titel||Photography - Front lens barrels up to 127 mm - Dimensions important to the connection of auxiliaries|