C4 Blue Cooling Color Correction

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C4 Blue Cooling Color Correction

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  • C4 Blue Cooling Color Correction
  • C4 Blue Cooling Color Correction
  • C4 Blue Cooling Color Correction

C4 Blue Cooling Color Correction

  • Designed for Film Photographers
  • Reduces Color Temperature by 350°K (-40 Mired Shift)
  • Helps balance warm lighting conditions by adding blue cooling effect
  • 6 layers of HMC multi-coating
  • Equivalent to @82C Filter
$54.90
$54.90
  • The C4 color correction filter cools the ambient light entering the lens by 350° kelvin (-40 mired shift) by adding blue to the overall exposure. This filter helps fine-tune the color or look of your scene to match your film's white balance.

    The Hoya C4 filter is helpful when:

    • You are using tungsten-balanced film and the light source is warmer than the traditional 3200° K and you need a specific amount of color correction to match your film type. Candles and low watt incandescent bulbs are examples of warm light sources.

    • You are shooting at sunrise or sunset with daylight-balanced film (5500° K) and the overall scene is too warm. The filter will help cool the scene for a more natural look.

    HOYA Multi-Coat (HMC) filters are recommended for enhancing the performance of today’s multicoated lenses. These popular filters minimize reflection, reduce flare and ghosting, and result in over 97% average light transmission.

    Comparison of C Series Filters:

    FILTER

    Cooling Amount

    Equivalent

    C2

    200°K (-20 Mired Shift)

    82A

    C4

    350° K (-40 Mired Shift)

    @82C

    C8

    1700° (-80 Mired Shift)

    80C
    C122200° (-120 Mired Shift)@80A


  • Exposure loss:2/3 Stop
    Mired Shift -40
    Equivalent Filter @82C
    Glass Type: Hoya Optical
    Number of Multi-Coatings: 6 total / 3 each side
    Hardened Top Layer: No
    Anti-Static: No
    Frame Construction: Low Profile / Aluminum
    Front Filter Threads: Yes