Rosco Colour Correction Filters

Rosco colour correction filters are professional lighting gels used in film, television, photography and stage lighting to balance and modify light sources. These filters allow cinematographers and lighting designers to match colour temperatures, correct mixed lighting and achieve consistent colour balance on camera.

Common uses for colour correction gels:
  • Matching daylight and tungsten lighting
  • Balancing mixed lighting environments
  • Correcting green spikes from fluorescent fixtures
  • Adjusting colour temperature in studio lighting
  • Maintaining consistent white balance on camera

Rosco Colour Correction Filter Reference

Filter Rosco Code Converts From Converts To Purpose View
Full CTO R3401 5500K 3200K Warms daylight-balanced sources to match tungsten lighting. View
½ CTO R3408 5500K 3800K Partially warms daylight toward neutral white. View
¼ CTO R3409 5500K 4500K Subtle warming for minor correction. View
Full CTB R3202 3200K 5500K Cools tungsten sources to match daylight. View
½ CTB R3204 3200K 4300K Partial cooling toward daylight balance. View
¼ CTB R3208 3200K 3600K Light cooling for subtle correction. View
Full CTS R3411 5500K 2900K Adds a warmer golden tone compared to CTO. View
Plus Green R3304 Varies Adds Green Matches fluorescent lighting sources. View
Minus Green R3315 Varies Removes Green Corrects green spikes from fluorescent fixtures. View
Lighting Tip: CTO warms daylight sources, while CTB cools tungsten sources. Plus Green and Minus Green filters are used to match fluorescent lighting or remove unwanted green colour casts.
Browse Rosco Colour Correction Filters View Colour Correction Filter Kit

Need Help Choosing the Right Filter?

If you're unsure which colour correction filter is best for your lighting setup, contact us and we can help recommend the right Rosco filter for your application.