W4 Umber Warming Color Correction
- 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:
200°K (+20 Mired Shift)
500° K (+40 Mired Shift)
1950° (+100 Mired Shift)
@85 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