I Don't Know What It Is I Don't Know What It Is "I Don't Know What It Is" is a song written and performed by Canadian-American singer-songwriter Rufus Wainwright. It was the first single from Wainwright's third studio album "Want One" and was released in a slim-line jewel case format on July 26, 2004. In addition to the UK and Japanese versions of "Want One", the song also appears on the bonus DVD that accompanies "Want Two" ("Rufus Wainwright: Live at the Fillmore"), "All I Want" (DVD), and "Want", a repackaged UK double album that contains "Want One" and "Want Two". In "All I Want", producer
Four Thirds system Thirds cameras came to an end after the introduction of the mirrorless Micro Four Thirds format. Discontinued models include: The Four Thirds lens mount is specified to be a bayonet type with a flange focal distance of 38.67 mm. There are currently around three dozen lenses for the Four Thirds System standard. Before announcing that it would stop production of Four Thirds lenses in early 2017, Olympus produced about 20 lenses for the Four Thirds System under their "Zuiko Digital" brand. They are divided into three grades — Standard, High Grade and Super High Grade. High Grade lenses have faster