Kenko Multi-Coating Filter & Digital Filter 2-Piece Set

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This is a protective and corrective filter for camera lenses made by Kenko, a major Japanese optics manufacturer.
It comes in vintage packaging typical of the 1970s-1980s and a distinctive crystal-cut style plastic case from that era. It is still cherished by old lens enthusiasts as an accessory that maintains the atmosphere of the time.

1. Product Types
◯ Left (Gold Box): MULTI COATED FILTER
• This is a type with a multi-layer coating applied to the lens surface.
• Function: Reduces light reflection, flare, and ghosting. It is similar to an early model of what is now called an MC Protector.
◯ Right (Silver Box): OPTICAL FILTER for COLOR
• As indicated by for COLOR, this is a filter for adjusting the color temperature of color film (e.g., adding blueness under incandescent light, or a skylight filter).

2. Features
• Case: A substantial plastic case unique to Kenko products of that era, with the Kenko logo on the lid.
• Size: The filter frame should have numbers like 52mm or 55mm engraved on the side. If this matches the filter thread size of your lens, it should be usable.

Important Notes ① Condition: As far as can be seen, there is no significant mold on the filter frame (black ring part) or glass surface. However, as it is an old item, there may be haze or cleaning marks when held up to the light.

Important Notes ② Use with Modern Cameras
These filters can be attached and used with current digital cameras. However, please be aware of the following:
1. Coating Performance: Compared to modern digital-specific filters, the anti-reflection performance is lower, so you may experience more white haze (flare) when shooting against the light.
2. Age-Related Deterioration: The ring holding the glass may be seized, or old oil may have seeped out.
*Please consider this item only after understanding that it is a very old, used product. Thank you for your consideration.