questionedithistorytranslationsWhat kind of camera lens is that?macro14939telephoto2983ultraviolet1275underwater1559Small front lens elements are typical for macro lenses.Share and bring new players to the game!correct this questionglobalquiz.orgreach: rather globallensopticsphotographytechnologys58yOptics quizPhotography quizTechnology quizWhich area is brighter?Both are the same. This is the well known checker shadow illusion, first published in 1995 by Edward H. Adelson, Professor of Vision Science at MIT. The area A appears darker because of its light surrounding. At the same time, area B, surrounded with dark areas, appear lighter.Why do cats have vertical pupils?To better see in the dark. The sharpest image is produced by round pupils, and if cats weren’t nocturnal, they probably would have round pupils like us. But the vertical pupil, in combination with horizontal eyelids, gives the cat greater and more accurate control in different types of lighting. A cat may adjust the amount of light by moving eyelids only.This optical phenomenon, appearing on misty mountainsides, is called...Brocken spectre. A Brocken spectre or mountain spectre, is the apparently enormous and magnified shadow of an observer, cast upon the surfaces of clouds opposite the sun. The head of the figure is often surrounded by the glowing halo-like rings of a glory—rings of coloured light that appear directly opposite the sun when sunlight meets a cloud of uniformly-sized water droplets. The phenomenon can appear on any misty mountainside or cloud bank.What kind of photos can be made with standard zoom lens mounted in the reversed position?Macro photography may be accomplished by mounting a lens in reverse, in front of a normally mounted lens of greater focal length. This method allows most cameras to maintain the full function of electronic and mechanical communication with the normally mounted lens, for features such as open-aperture metering.