Diaphragm (optics) photographic lens is called an iris diaphragm. In the early years of photography, a lens could be fitted with one of a set of interchangeable diaphragms , often as brass strips known as Waterhouse stops or Waterhouse diaphragms. The iris diaphragm in most modern still and video cameras is adjusted by movable blades, simulating the iris of the eye. The diaphragm has two to twenty blades (with most lenses today featuring between five and ten blades), depending on price and quality of the device in which it is used. Straight blades result in polygon shape of the diaphragm opening, while
As the Flower Withers As the Flower Withers As the Flower Withers was the first album by Yorkshire-based doom metal band My Dying Bride. The artwork was designed by Dave McKean. This is the only full-length My Dying Bride album on which lead vocalist Aaron Stainthorpe utilizes his trademark death growl as the sole vocal style. Many of the tracks on this album have appeared in a different form on other My Dying Bride releases. "Sear Me" was the first in a trilogy of songs to bear the title, followed by the keyboard- and violin-only "Sear Me MCMXCIII" in 1993 and "Sear Me III"