F-number lengths. Therefore, reduced–depth-of-field effects will require smaller f-numbers when using small-format cameras than when using larger-format cameras. Image sharpness is related to f/number through two different optical effects: aberration, due to imperfect lens design, and diffraction which is due to the wave nature of light. The blur optimal f-stop varies with the lens design. For modern standard lenses having 6 or 7 elements, the sharpest image is often obtained around 5.6–8, while for older standard lenses having only 4 elements (Tessar formula) stopping to 11 will give the sharpest image. The larger number of elements in modern lenses allow the
Hits 6 "Nothing's Gonna Stop Us Now", "La Isla Bonita" and "Star Trekkin'". Hits 6 The Hits Album 6 or Hits 6 is a compilation that was released in July 1987 by CBS, WEA and BMG in the UK. It was a successful album, and reached #1 and achieved a Platinum BPI award. It was also the second "Hits" album to be released on CD, with 17 tracks from the standard 32 track LP/MC. A music video compilation was also released on VHS by CBS/Fox Video. "Hits 6" features six songs which reached number one on the UK Singles Chart: "I Wanna