B-1,4x B-1.4x 49mm blue lens filter 49x0,75 USSR LZOS for Helios-44-2 box

B-1,4x
49mm blue lens filter
LZOS, USSR
with box

Perfect condition. Fully operational. There are no scratches, cleavages, fungus. The rim has very small signs of use. Box is original and has small signs of age.

Lens "Helios-44-2" is not included and shown as an example of mount.

This filter has 49x0.75 mount and is designed for popular USSR lenses: Helios-44-2, Mir-1, Mir-1B, Mir-1SH, Jupiter-9 and others.

This is a classic blue filter with medium power, also it can be marked as "G-1.4x" or "CC-2". Its aim is to weaken red and orange light and to decrease the contrast of far objects.
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Weight - 13 g (28 g with box)
Mount (mm) - 49x0.75
External size (mm) - 51x7
Box external size (mm) - 61x12