Despite selecting the High option when exporting JPEG images from Photo, I find the file size at destination is usually around 3MB - approx 60% smaller than when I exported the same images from iPhoto with the High option. If Photo is compressing JPEG images more during export than iPhoto, I assume the image quality is also reduced. Worse still, there is the possibility that Photo is actually extra-compressing images at the import stage, not during export. Or both! Has anybody noticed the same issue and, if yes, does it also apply to TIFF and PNG images?