Diaphragm (optics) bright spots, for example night cityscapes. Some cameras, such as the Olympus XA or lenses such as the MC Zenitar-ME1, however, use a two-bladed diaphragm with right-angle blades creating a square aperture. Similarly, out-of-focus points of light (circles of confusion) appear as polygons with the same number of sides as the aperture has blades. If the blurred light is circular, then it can be inferred that the aperture is either round or the image was shot "wide-open" (with the blades recessed into the sides of the lens, allowing the interior edge of the lens barrel to effectively become the iris).
As Far as the Eye Can See As Far as the Eye Can See As Far as the Eye Can See is the debut album of Welsh alternative rock band People in Planes (or second album overall, as 2002's "Splendid Animation" was released under the previous band name of Tetra Splendour), released on 28 March 2006. After being dropped by EMI, the band recorded a new album at Wales' Monnow Valley Studio, containing new songs (with newly hired keyboard player Ian Russell) and unreleased Tetra Splendour material. The music video for the album's first single, "If You Talk Too Much (My Head Will Explode)", was directed by