What information does the camera save with each image?
The camera saves quite a bit of information with each image, including the time the photo was taken, the shutter speed and aperture, whether the flash was used or not, and minor things like whether the image was locked, whether macro mode was used, whether sequence (9-shot) mode was used, etc. Editing and saving (overwriting) your original image file will lose this information since it is not resaved with the modified image. Holger Jungk has written a shareware program for Windows 95/98/NT users called Picture Information Extractor (PIE) that displays the internal saved information, but it can do much more. PIE can rename images, and most importantly, perform lossless JPEG rotation. This means with PIE it is possible to rotate images with no quality loss and not waste disk space. I personally use PIE myself. Jeremy Sonander has written a program also for Windows 95/98/NT called Rename Pictures that takes this hidden information and uses it to create a new filename like 180_F0_A2.8_S0.1
