10 most difficult photography riddles A list of ten (out of 22) photography related questions that are the most often answered incorrectly Photography quiz What term would photographers use to describe the quality of blurred part of the photo? Bokeh has been defined as "the way the lens renders out-of-focus points of light". It can be good or unpleasant, depending on the lens aberrations and aperture shape. The term comes from Japanese for "blur".very hard 33% diffractiondiffraction33%bokehbokeh33%outfieldoutfield19%overexposureoverexposure13%Created by: globalquiz.org. Statistics based on 4902 answers in 2 languages »optics riddles » What was the exposure time of this photo?About 1 hour. The length of stars trails is pretty much the same as the distance travelled by an hour hand of clock during 30 minutes. But the Earth rotates twice as slow compared to the hour hand of a clock (one rotation per day, while clock's hour hand makes two).very hard 35% about 10 secondsabout 10 seconds18%about 10 minutesabout 10 minutes12%about 1 hourabout 1 hour35%about 8 hoursabout 8 hours33%Created by: globalquiz.org. Statistics based on 5635 answers in 2 languages »time riddles » How many shots did color photography pioneers take for every photo?3. The first permanent color photographs were taken using the three-color-separation principle first published by physicist James Clerk Maxwell in 1855. Maxwell's idea was to take three separate black-and-white photographs through red, green and blue filters. This technique was used by Prokudin-Gorskii in this photo of Austro-Hungarian POWs.very hard 37% 1116%229%3337%10-2010-2037%Created by: globalquiz.org. Statistics based on 2932 answers in 2 languages »history of photography riddles » Kodak, Fujifilm and Agfa used to be top producers of photographic films and equipment. Which of these companies best survived the advent of digital photography?Fujifilm. Only Fujifilm has survived the digital revolution. AgfaPhoto GmbH, separated from Agfa holding in 2004, filed for bankruptcy after just one year. The Agfa photographic brands are now licensed to other companies. Eastman Kodak filed for bankruptcy in January 2012.hard 45% KodakKodak36%AgfaAgfa6%FujifilmFujifilm45%all of themall of them11%Created by: Monica Stiller. Statistics based on 8294 answers in 2 languages »companies riddles » What kind of furniture was specifically made for photographers in the mid-19th century?Tables. The heavy specialized tables known as "Broody stands" were factory-made to keep models steady during the long exposure times. The table typically had a weighty cast iron base for stability, plus an adjustable-height pipe leg for use as either a model's armrest or neckrest.hard 46% wardrobeswardrobes8%tablestables46%armchairsarmchairs30%sofassofas15%Created by: globalquiz.org. Statistics based on 3897 answers in 2 languages »technology riddles » World's fastest high-speed cameras were built to take photos of specific objects. What kind of objects?Nuclear bomb explosions. The rapatronic cameras are capable of recording a still image with an exposure time as brief as 10 nanoseconds (that would give 100 million frames per second if the camera was capable to do multiple pictures). The camera uses two polarizing filters mounted with their polarization angles at 90° to each other and a Faraday cell which briefly changes the polarization plane of light passing through it, acting as a shutter.hard 47% bullet shotsbullet shots19%rocket launchesrocket launches9%nuclear bomb explosionsnuclear bomb explosions47%sound wavessound waves22%Created by: Cleo. Statistics based on 6033 answers in 2 languages »technology riddles » What kind of lens was most likely used for this photo?Fixed focal length. Such shallow depth-of-field is possible with lens of large aperture size (small f-number). The large aperture is a typical feature (and advantage) of a fixed focal length lens. The photo was taken with a 50mm f/1.4 lens. hard 50% fixed focal lengthfixed focal length50%zoomzoom16%telephototelephoto11%macromacro21%Created by: Debbie Fox. Statistics based on 8613 answers in 2 languages »lens riddles » In which year was the earliest surviving photograph created?C. 1826. Although Nicéphore Niépce took the first fixed, permanent photograph in 1822, it was later destroyed. The earliest surviving photograph by him is dated c. 1826 and is called 'View from the Window at Le Gras' (La cour du domaine du Gras). The image was created at Saint-Loup-de-Varennes and it captures the roof and surrounding countryside of the estate - Le Gras.hard 51% c. 1826c. 182651%c. 1852c. 185228%c. 1886c. 188615%c. 1905c. 19054%Created by: Konrad Korczynski. Statistics based on 6988 answers in 2 languages »technology riddles » Which of the following camera lenses are typically more expensive?F/1.8. The smaller the f-number, the larger relative aperture there is, and that means more light for the exposure. Each aperture has half the light gathering area of the previous one.hard 55% f/1.8f/1.855%f/2.4f/2.47%f/2.8f/2.812%f/3.5f/3.524%Created by: karate kid. Statistics based on 7148 answers in 2 languages »technology riddles » Why were photographic prints sepia toned?For improved resistance. Sepia toning enhances archival qualities of the photos. Chemicals are used to convert the metallic silver in the print to a sulfide compound, which is at least 50% more stable than silver.hard 56% sepia process was cheaper than black and whitesepia process was cheaper than black and white13%for improved resistancefor improved resistance56%it is simply ageing of paperit is simply ageing of paper14%it is the effect of exposition to sunlightit is the effect of exposition to sunlight15%Created by: globalquiz.org. Statistics based on 10109 answers in 4 languages »chemistry riddles » Play photography quiz and see all the questions.