
Rosco 114, 119 and 132 are among the most popular filters utilized by lighting professionals around the world. The Hamburg frost family's unique, embossed optical structure produces a precisely softened beam edge and is engineered to maintain a crucial light-to-dark ratio. Manufactured on Rosco's proprietary, fire-retardant, polycarbonate base, these frost filters refract light without creating the unwanted flare and light-scatter commonly experienced with coated white diffusions.
So why update anything if these are so popular and marvelous?
Because they can be better.

Rosco recently developed new embossing tools for use in the production line of the Hamburg Frost series. This allows for improved process controls and consistent, long-term control of the filters' diffusion properties.
Continuity was the number one goal of the equipment upgrade and Rosco is confident that the Hamburg Frosts will perform as they always have and live up to your expectations. While the new production is virtually an exact match to the original Hamburg filters, Rosco does not recommend using new and old materials in the same lighting system. You may notice a slight difference when both are used in fixtures whose beams appear side-by-side on stage.
You may notice a mark on the new filters that repeats every 24 inches. This nearly imperceptible seam may be found in both sheets and rolls of R114, R119 and R132 and is a result of the new manufacturing process. It is not a defect and will not project nor in any way affect the use of the lighting filter.

These new Hamburg Frosts will be entering the marketplace in the next 3-6 weeks as it replaces existing stock. The upgraded materials will be denoted with a "+" after the number that is stamped at the bottom of the sheets and printed on the core tags of the rolls (Ex: ROSCO119+). This "+" delineation will help you keep your new and old inventories separate as we all transition fully into the new production.
Rosco beta-tested the new formulations with select designers whom they knew to be passionate fans of the Hamburg Frosts. In each case, these designers told us they were pleased with the upgrades. Rosco is sure you will be too.
Most of the post is from our dealer update from Rosco Laboratories. We just couldn’t wait to share the news with you. If you have any questions about this, please don’t hesitate to contact StageSpot for all your lighting updates!