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30.5mm Skylight KR-1.5 (1A) Filter

Part #: 65073192




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The B+W 30.5mm Skylight KR-1.5 (1A) Filter absorbs violet and some blue plus a minimal amount of green, but it passes yellow and red undiminished; the color of the light becomes “warmer” by 15 Mired. That is mostly the optimal amount for correcting the light blue cast in the shadows under a blue sky. It also absorbs UV radiation and hence it provides better sharpness. With color films and/or developing processes that generally yield results that are too “cool," this filter can be kept on the lens at all times. With this filter, skin tones in particular will be rendered more naturally. Its filter factor is approximately 1:1.

This filter uses our standard B+W F-Pro filter mount, which has a front accessory thread and is made of brass. Compared to the earlier standard mount introduced in 2001, the F-Pro mount has become thinner. Now it can be used with wide angle lenses, including most 24mm focal lengths on a full frame body, without vignetting. Another advantage of the F-Pro mount is it's modified retaining ring, which is no longer threaded in from the front, but holds the filter glass in place from the back. When removing a filter or lens hood that has been screwed on too tight to the filter, the retaining ring is not at risk of loosening.

Each glass surface is vacuum coated with one layer of Anti-Reflection coating. This single layer helps to prevent internal ghosting and reflections. It also improves light transmission from approximately 92% (uncoated glass) to over 98%. 

NOTE: diopters are mounted in the older mount due to glass thickness.

  • Helps to improve general color accuracy and clarity when photographing outdoors in daylight and shade.
  • Light pink tint reduces bluish cast of natural light.
  • General protection filter reduces dust, moisture, and scratches from reaching lens elements.
  • Constructed from high quality Schott glass for optical clarity.
  • Brass filter ring helps to prevent jamming and provides additional strength.

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Filters Information
Filter Shape Round
Filter Type UV/Skylight/Haze
Filter Size 30.5mm
  • 10-Year Limited Warranty
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