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PrimeCircle filters are diamond cut from German Ultra-White optical glass, the best quality solution for modern high resolution lenses! The parallel relationship between front and rear surfaces (important for the best optical performance) is verified with a laser interferometer and a densitometer is used for testing consistent density. To check proper light transmission is also used a spectrophotometer!

This simple filter is designed to provide protection for
the camera and the lens and does not usually incorporate
any effect.
Every camera and lens should have a clear filter attached
as a matter of course. The filter protects the lens against dust,
moisture, scratches and finger marks.
the camera and the lens and does not usually incorporate
any effect.
Every camera and lens should have a clear filter attached
as a matter of course. The filter protects the lens against dust,
moisture, scratches and finger marks.