One PLASA Photometric Standard in Public Review

ANSI E1.35 - 2007, Standard for Lens Quality Measurements for Pattern Projecting Luminaires Intended for Entertainment Use, is being revised to increase the accuracy of the measurement procedure while still keeping it simple. The draft of the revised standard is available for free download and comment through October 8 at http://tsp.plasa.org/tsp/documents/public_review_docs.php.

E1.35 describes a method for measuring stage and studio luminaire lens quality with particular emphasis on contrast and perceived image quality (sharpness). It also offers a way for presenting these results on a datasheet in a format that is readily understood by a typical end-user. It's a simple way of saying, "This lens is sharper than that lens."

For more information, please contact Karl Ruling, PLASA's Technical Standards Manager, at karl.ruling@plasa.org.