Description
The 81A color correction filter warms the ambient light entering the lens by 200° Kelvin by adding “orange” to the overall exposure. The filter helps fine-tune the color or look of your scene to match your film’s white balance.
The Hoya 81A filter is helpful when:
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You are using daylight-balanced film and the light source is cooler than the traditional 5500° K and you need a specific amount of color correction to match your film type.
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You want to add a slightly warmer look to your portraits.
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You are shooting in overcast or shady conditions.
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 81 Series Conversions:
| FILTER |
Cooling Amount (in degrees Kelvin) |
| 81A | 200° |
| 81B | 300° |
| 81C | 400° |
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