Tags, light
15.10.–15.12.2015
4. Photo Forensics: As Seen on CSI

A digital camera contains a vast array of sensor cells, each with a photo detector and an amplifier. The photo detectors measure incoming light and transform it into an electrical signal. The electrical signals are then converted into pixel values. In an ideal camera, there would be a perfect correlation between the amount of light striking the sensor cells and the pixel values of the digital image. Real devices have imperfections, however, and these imperfections introduce noise in the image. mehr

Veröffentlicht: 27.11.2015
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2. Welsh Water

One of the pictures that I always come back to when thinking about object photography is a black and white image by the artist Jean-Luc Moulène entitled Bi-Fixe, 7 September 2003. It shows two PET bottles of mineral water from Wales sold under the brand Ty Nant, which have been laid flat onto a medium-colored background and photographed directly from above so as to avoid distortion. mehr

Veröffentlicht: 11.03.2013
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01.11.–15.12.2012
5. Experiment

Experiments have traditionally been set in opposition to observation, although more recent scholarship has begun to seriously question that neat categorization. If photographic observations, the subject of the last blog, are messy, then experiments seem to be even more so. mehr

Veröffentlicht: 10.12.2012
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4. Observation

The next two blogs will deal with the often conjoined activities of observation and experiment, as they pertain to photography and science. They are significant in thinking about photography because they are so very bound up in the arguments about photography’s supposedly prickly relationship with art. mehr

Veröffentlicht: 05.12.2012
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1. Image and Practice

On 24 February 1839, Jean Baptiste Biot suggested in a letter to William Henry Fox Talbot that the fixation of exact photographic tonality, the fine shades, (and depending on how you read it, even the fixation of images themselves), was largely a matter for art. Physics, he continued, was more concerned with the use of the instrument – in this case, photogenic drawing paper. Scientists’ comments about photography, like this one from Biot, illuminate historiographical roads not taken, holding out the possibility of adding new strands to the history of photography. mehr

Veröffentlicht: 31.10.2012
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