Monday, November 15, 2021

Repost: The Top 5 Most Frequently Asked Questions About Rosco e-colour+

With the supply chain issues of late, we've had a lot of customers of late asking us about "pivoting" to products that might be in stock when we might not be able to source a product due to scarcity. 

Rosco Labs recently did a blog post explaining their e-color+ gel in comparison to their other lines. 

With their permission, we're re-posting it here for our readers.  If you have any questions about gel or would like to try Rosco e-color+ contact your local Barbizon office or email

The Top 5 Most Frequently Asked Questions About Rosco e-colour+


Rosco is the world’s largest and oldest color filter manufacturer operating today. Founded more than a century ago, it has developed numerous color filter lines over the years, including Roscolux, Cinegel, Supergel, and e-colour+. In this blog, we turn the lens onto Rosco e-colour+ to answer some of the most common questions posed by film and television professionals about this popular color filter range.

#1 What is Rosco e-colour+?
Rosco e-colour+

Rosco e-colour+ is a comprehensive selection of color filters for theatre, film, and television production. It was developed in 1992 and is comprised of color correction, neutral density, color effects, diffusion, and reflection materials. e-colour+ filters are available in 21”x24” (53cm x 60cm) sheets and 48”x25’ (1.22m x 7.62m) rolls, and several e-colour+ materials are now available in wide-width, 60”x20’ (1.5m x 6.1m) rolls.

#2 Is Rosco e-colour+ the same as Lee?

Yes, e-colour+ is essentially the same product as Lee. Both e-colour+ and Lee are derived from the Cinemoid filter system, which was introduced in Europe in the early 1950s by Strand Lighting. Therefore, they share the same name/number/color system. Examples:

  • L201 Full CTB is the same as E201 Full CTB
  • L250 ½ White Diffusion is the same as E250 ½ White Diffusion
  • L210 0.6ND is the same as E210 0.6ND
  • L119 Dark Blue is the same as E119 Dark Blue

Moreover, both e-colour+ and Lee filters are manufactured using the same materials and processes. They are both surface coated polyester films (more about this below). In conclusion, there is an e-colour+ filter to match any Lee filter – just swap the L for an E!

#3 How is Rosco e-colour+ different from Rosco Cinegel?
Rosco e-colour+ vs Rosco Cinegel

Historically, the primary difference between e-colour+ and Cinegel is their manufacturing processes and their name/number/color systems.

Cinegel: Deep-Dyed Polyester

Cinegel is an optically clear polyester (PET) film that uses a deep-dyed technique to embed the color into the filter. The PET film is passed through a heated dye bath that allows the colored dye to penetrate into the base film. This traps the color inside the plastic for greater color stability as it fades.

It’s also worth noting that the Cinegel range has earned two Academy Awards® for Technical Achievement. One was for the original development of the Cinegel color correction range. The other was for the introduction of CalColor – a range of primary and secondary (RGB and CMY) color filters that are calibrated for the camera.

e-colour+: Surface Coated Polyester

The e-colour+ process coats the PET with a dye solution to provide a consistent color across the film for reliable performance in the field. While this process provides acceptable resistance to dye fade when placed on hot lights, surface coated filters like Lee and e-colour+ do not maintain their hue as well as deep-dyed filters like Cinegel. A surface coated Full CTB, for example, has a tendency to skew green as it fades.

There are a few other differences between the two filter ranges. As noted before, Cinegel and e-colour+ have different name and number systems – a three-digit system for e-colour+ and a four-digit system for Cinegel.

There are color differences in their correction filters as well. A Cinegel Full CTB, for example, does not match an e-colour+ Full CTB. That’s because Cinegel was originally designed in the United States to match the Kodak film standards. e-colour+ filters (and Lee filters), on the other hand, match the AGFA film standards used in the UK and Europe. Although these standards are no longer as important as they once were due to the widespread use of digital cameras, they do explain why the CTO & CTB colors of Cinegel and e-colour+ differ.

#4 What are the advantages of e-colour+ filters?
Rosco e-colour+
  • Oftentimes, e-colour+ is a more cost-effective and affordable filter solution. Consult a Rosco dealer in your area for pricing.
  • All e-colour+ rolls feature 1” cores. This is a significant advantage when storage space is at a premium. Whether it’s gel space in a warehouse, a truck, or a gel cart – Rosco e-colour+ takes up less real estate than rolls on 2″ cores like Lee.
  • We have recently introduced edge-marked rolls for the most popular color correction and diffusion filters in the range. An imperial measurement is marked every foot – making it easy to measure, cut, and keep track of how much gel is left on the roll.
  • e-colour+ filters are coated with a flame retardant solution that meets the BS-3944 flammability standard.
#5 Where can I get e-colour+ filters?

e-colour+ filters are available, globally, from five stocking Rosco locations: Stamford, CT; Sun Valley, CA; Toronto, Canada; London, UK; and Madrid, Spain. Contact your local Barbizon Lighting office and ask for e-colour+ the next time you’re buying gels.

Visit the e-colour+ product page to learn more about Rosco e-colour+ filters.