Posógrafo Kaufman

Photography was an invention that had done little half century since its rudimentary and primitive ancestors and today day costs if sometimes a photo goes well, imagine in 1920. Lo and behold, came Mr. Kaufmann and invented the Posógrafo, a contraption that by means of straps (which would Tip, Holy Man) allowed photographer pioneer then (and probably also the current) calibrate environmental variants to configure the controls on your camera to come out decent pictures of the name, instead of curious Impressionist paintings. As you see in the diagram shown below these lines, the Posógrafo presented interior mechanisms that allowed connected together to provide an answer set starting conditions. Knowing given conditions (month daylight, state of the sky ...) mechanisms make tabs indicating that data displace other reporting you to the exposure time, the opening of the diaphragm, etc that need to be set in the camera. The scientific method (trial and error) applied to photography in its early days was quite expensive and took a long time, since the snapshot taken after the developing process was not exactly quick. So, this computer bricolájica of pocket allowed to handle six variables with a number of possibilities allowed to adjust rather the result to be of optimum quality. Nor it would be unreasonable for nearly a century after the end Posógrafo back into the pockets of amateur photographers as our app for smartphones. the posógrafo is a pocket computer helping photographers to calibrate environmental variants of the composition wanted to capture in order to configure the camera controls optimally. The funny thing is that this invention dating from as early as 1920. This contrivance, invented by Kaufmann, presented interior mechanisms compounds of flat metal levers cut and rods connected together to respond shaped diaphragm and exposure time to a large number of conditions of all kinds: color floor and walls, exterior light, space sky seen, year and month of daylight, tone and clarity, kind of scenario, state of the sky ... Our posógrafo measured 13x8,5cms and weighs about 100 grams and is composed of pictures enameled and bordered by a frame nickel showing determinants and ideal exposure time. The article also comes in a beautiful leather case. In order to create this appliance it was necessary to experiment over 4 years all possible conditions that could deal a photographer. Today all photographers work with photometers to measure them light so we can use the most appropriate on each occasion diaphragm and speed. It seems incredible that almost 100 years ago Kaufmann would pool their mathematical knowledge to the photographic experience to offer an object so useful at the same aesthetic.