Exif's Image File Directory - Forensics Perspective (Part 1)
Exif IFD Tags Exif data contains different exif tags and each exif tag has its own value (eg. time, data, GPS etc). Exif tags are used to encode additional information related to an image when the image is generated or captured by the digital cameras. NOTE : There are many exif tags in exif's image file directory but I will cover the most important once from which one can find evidences. Tags 1. ExposureTime Exposure time is measured in seconds (eg. 1/500 (0.002 sec)). The main purpose of an exposure time is to describe the brightness of an image or the amount of light a sensor receives. Evidence : You can find out whether the photograhp is taken in brightness or darkness. If the exposure time is around 10 to 30 seconds then you can consider it as a night time photography and if the exposure time is around 1100 to 1125 seconds you can consider it as a day time photography. NOTE : Exposure timings are not always between the above mentioned values, they can set as per the ...