Still Searching…

From 2012 to 2023, the discursive blog format of Fotomuseum Winterthur subjected all aspects of photography and its role in visual culture to interdisciplinary scrutiny. The approximately 50 bloggers that contributed to Still Searching… discussed photographic media and forms within their complex technological, capitalist and ideological networks and negotiated some of the most pressing and relevant questions surrounding photography.

Index

Blog series: Photo Forensics

Hany Farid | 15.10. – 15.12.2015
Photo Forensics

From October 15 until mid-December, Hany Farid will shed light on the ubiquity of image manipulation and the nature of trust in photography from the point of view of photo forensics. He will discuss digital forensic techniques used to detect various forms of tampering in visual material that he argues may have the potential to restore — at least partially — our faith in photography.

Photo Forensics: As Seen on CSI

Friday, 27.11.2015
<p>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.</p>