Tiffen 40.5mm Skylight 1-A Filter General Lens Accessories Allows for quick and easy

Allows for quick and easy screw tightening

If you have used a UBW or Arduino before and are frustrated by the lack of CPU power

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in case the regular knob interferes with the binocular's minimum interpupillary distance setting

80 dB Blocking Immunity

Tiffen 40.5mm Skylight 1-A Filter General Lens Accessories Allows for quick and easyReduces Bluish Cast of Daylight Provides Greater Color Accuracy General Protective Filter ColorCore Technology The Tiffen 40. 5mm Skylight 1 A Filter is a general use filter with a slight pink tint to help improve overall color accuracy and clarity. The light pink coloration helps to reduce the overall bluish cast of daylight and is especially effective when photographing landscapes and in shade. The Sky 1A filter is also useful as a general