Tiffen 4985 49mm 85 Series Color Correction Filter

The Tiffen 4985 is a 49mm 85 series color correction filter designed for a specific photographic challenge: neutralizing the strong blue color shift that occurs when tungsten-balanced film is exposed under daylight conditions. Tungsten film is calibrated for the warm, approximately 3200K color temperature of indoor tungsten lighting, and when used outdoors under daylight (approximately 5600K), images take on a pronounced blue cast. The 85 filter introduces an amber correction that brings colors back into natural balance, allowing photographers to shoot tungsten film outside without sacrificing accurate color reproduction.

Built to Tiffen's standards and manufactured in the United States, the filter threads onto any lens with a 49mm front filter diameter. Its slim profile at just 1.4 cm depth minimizes the risk of vignetting on standard focal lengths. While the rise of digital photography and electronic white balance has reduced the everyday demand for optical color correction filters, the 85 remains a relevant tool for film photographers and for digital shooters who prefer to apply consistent warming effects optically rather than in post-production. The filter is a single-purpose tool — it does one thing and does it reliably.