W4 Umber Warming Color Correction
W4 Umber Warming Color Correction

W4 Umber Warming Color Correction

Regular price$54.90
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  • Designed for Film Photographers
  • Warms Color Temperature by 500°K (+40 Mired Shift)
  • Excellent choice for heavy shade or overcast days to add warmth
  • 6 layers of HMC multi-coating
  • Equivalent to 81D Filter

W4 color correction filter warms the ambient light entering the lens by 500° kelvin (+40 mired shift) by adding light amber color to the overall exposure. This filter helps fine-tune the color or look of your scene to match your film's white balance or creative vision.

The Hoya W4 filter is helpful when:

  • You are using daylight-balanced film and the light source is colder than the desired look and you need a specific amount of color correction to match your film's color balance (5500°K). Great on strong overcast days or when you subject is in the heavy shade.

  • When shooting portraits and you want to give the skin tone a sun-kissed warm look.

  • You are shooting at sunrise or sunset with daylight-balanced film (5500° K) and you want to a really warm looking scene.

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:


Cooling Amount



200°K (+20 Mired Shift)



500° K (+40 Mired Shift)



1950° (+100 Mired Shift)

W12 2200° (+120 Mired Shift) @85B
Exposure loss: 2/3 Stop
Mired Shift +40
Equivalent Filter 81D
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