Whatever programme I use to rotate pictures 90 degrees, and I'm talking JPEGs here, the resulting file always seems to be smaller (I mean bytes on disc here). Although I can't tell if there is any detriment to the image looking at it. About 10% loss in size. Any way of avoiding this? (other than using viewing programmes that use the EXIF data to just rotate the thumbnails). Or if this is even something to worry about? Photoshop seems to incurr the least loss but it throws away the EXIF data, and I can't seem to find where to stop it from doing that. I have for now PS 5.5 (it's free from my lab, and it works for my purposes so far). Other things I've noticed when you look at the file properties in windows, line resolution for horizontal and vertical was 312x312 dpi and now is 72x72dpi? Bit depth is retained at 24. Colour space data is no longer showing sRGB. Thanks in advance.