- Equivalent to 81D Filter
- Excellent choice for heavy shade or overcast days to add warmth
- When shooting portraits and you want to give the skin tone a sun-kissed warm look.
- Warms Color Temperature by 500°K (+40 Mired Shift)
- 6 layers of HMC multi-coating
- Front Filter Threads
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 (5500K). 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.
- Designed for Film Photographers
- Warms Color Temperature by 500K (+40 Mired Shift)
- Excellent choice for heavy shade or overcast days to add warmth
- 6 layers of HMC multi-coating
- Equivalent to 81D Filter
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.
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
W2 200K (+20 Mired Shift) 81A
W4 500 K (+40 Mired Shift) 81D
W10 1950 (+100 Mired Shift) @85
W12 2200 (+120 Mired Shift) @85B
Filter at a Glance
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
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