For working with tungsten-balanced film under daylight conditions, this 58mm 85C HMC Color Conversion Filter from Hoya is a warming filter used to decrease the color temperature from 5500K to 3800K. The amber color of the filter has a filter factor of 1.3x, requiring an additional 0.3 stops of exposure to achieve normal results.
The filter is constructed from optical glass and has a six-layer HMC coating to reduce surface reflections and glare in order to retain high image accuracy, clarity, and contrast. It is mounted within a durable, lightweight aluminum ring, which has a hard anodized finish to guard against wear.
Amber color conversion filter decreases color temperature and provides a warming effect.
Converts 5500K to 3800K for using tungsten-balanced film in daylight conditions.
Filter factor of 1.3 requires approximately 0.3 stops of additional exposure to maintain normal results.
The Hoya Multi-Coating (HMC) uses a six-layer, three-per-side, design that helps to noticeably reduce surface reflections and glare for improved contrast and image fidelity.
Aluminum filter ring is both lightweight and durable and features a hard anodized finish to guard against scratching and wear.