Human eye The upper end of the range is given in terms of normal visual performance as 10 cd/m (100,000,000 or one hundred million candelas per square meter). The eye includes a lens similar to lenses found in optical instruments such as cameras and the same physics principles can be applied. The pupil of the human eye is its aperture; the iris is the diaphragm that serves as the aperture stop. Refraction in the cornea causes the effective aperture (the entrance pupil) to differ slightly from the physical pupil diameter. The entrance pupil is typically about 4 mm in diameter, although it
Diana Vreeland: The Eye Has to Travel stylish doc should enjoy a nice arthouse run before becoming an essential presence on the DVD shelves of fashionistas everywhere.” Writing for "Variety", Jay Weissberg says, “Few names conjure ‘style’ with the zest of Diana Vreeland, and documentary "The Eye Has to Travel" gets the zing just right.” Currently, the film has a rating of 95% on Rotten Tomatoes, based on 63 reviews and an average score of 7.2/10. Diana Vreeland: The Eye Has to Travel Diana Vreeland: The Eye Has to Travel is a 2011 documentary about the life and career of Diana Vreeland, a fashion legacy famous for