The refractive index of current eyeglass lens materials ranges from 1.498 (CR-39 plastic) to 1.74 (a specific variety of high-index plastic). So for the same prescription power and lens design, a lens made of CR-39 plastic will be the thickest lens available, and a 1.74 high-index plastic lens will be the thinnest.
Principal photography on the film began on April 25, 2016, in Pittsburgh, Pennsylvania, in the Hill District, and wrapped in mid-June 2016. Fences was released in the United States on December 16, 2016, by Paramount Pictures, received positive reviews and grossed $64 million.
Twilight Saga is the first installment of the Twilight film series, based on Stephenie Meyer 's novel of the same name. Starring Kristen Stewart as Bella Swan and Robert Pattinson as Edward Cullen, it was released November 21, 2008 in North America and December 11, 2008 in Australia.