Diaphragm (optics) curved blades improve the roundness of the iris opening. In a photograph, the number of blades that the iris diaphragm has can be guessed by counting the number of diffraction spikes converging from a light source or bright reflection. For an odd number of blades, there are twice as many spikes as there are blades. In case of an even number of blades, the two spikes per blade will overlap each other, so the number of spikes visible will be the number of blades in the diaphragm used. This is most apparent in pictures taken in the dark with small
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"