Category Archives: EXIF-Hacks
PhotoCookie: an easy version tracker for JPEG files
A few weeks ago, the evercookie project had its initial release and caused quite some stir among web privacy experts. It allows website owners to track site visitors even with deleted cookies by storing the cookie information in a dozen … Continue reading
pyexiv2 – the best choice for photo metadata manipulation in python
Some days ago, the python community received an early easter gift: version 0.2.0 of the image metadata library pyexiv2 was released. First of all, I want to congratulate project maintainer Olivier Tilloy and all his contributors to this important milestone. … Continue reading
ThermoTagging: Evaluating the CameraTemperature
Last week, I was blogging about exiftool’s newest tag discovery, the CameraTemperature. I assumed that the CameraTemperature roughly equals the environment temperature and sketched some really exciting applications based on this idea (e.g. assigning keywords or conducting searches using this … Continue reading
Take a (Power)Shot at ThermoTagging
Phil Harvey recently published Exiftool 7.97, which comes with a well hidden, but exciting feature: it can decode the camera temperature for Canon PowerShot Models. All Canon Powershots built 2005 or later store this information in their EXIF header, albeit … Continue reading
Shutter Count – the mileage indicator for your DSLR
So you are about to buy a used DSLR cam from eBay. The model isn’t top-notch, but still solid quality and was released 2 years ago. The pictures on the auction page of the cam look good, but was the … Continue reading
Ultra-fast RAW to JPEG conversion with exiv2
Finally you escaped from your dusty appartment and spent a wonderful day shooting photos in the wild with your brand-new SLR. To capture all the magnificient details of nature, you decided to shoot in Camera RAW, and not in crumpy-old … Continue reading