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
Adler Standard 6 same time Le Corbusier undertook a similar exercise for the auto-maker Voisin, apparently encountering similarly lacklustre customer demand in return for his effort. Between 1927 and 1929 the Mülheim born racing driver Clärenore Stinnes, driving an Adler Standard 6, undertook the first recorded successful round-the-world drive. This entry incorporates information from the German Wikipedia . Adler Standard 6 The Adler Standard 6 was the most important newcomer at the Berlin Motor Show in October 1926. It was a substantial six cylinder “limousine” (saloon) built by the Frankfurt auto-maker, Adler. Other body styles were available from coach builders. The model continued