UV-1x and YG-1.4x filters in case (62x0.75) standard set for KIEV-60, KIEV-88
You can use light filters used as attachments, which can be screwed into the front part of the lens (thread M62x0.75).
The achromatic light filter UV-1x is used for weakening the effect of ultraviolet rays, for example, when taking pictures under high-mountain conditions, it is also helpful in colour photography.
The light yellow-green filter YG-1.4x improves tone reproduction of multi-colour objects on high-sensitive photographic materials with a slight loss of their sensitivity. Virtually correct tone reproduction of multicolor objects is achieved by the use of the filter on medium sensitivity films.