i have a book with a lot of big images that i have scanned in very good quality. when abbyy finereader detects the image in abbyy the images have a very good quality. when i export to epub the images have a poor quality. the images settings i use:
keep pictures -> custom -> disabled "reduce original resolution if required" -> quality: quality loss not allowed
i used this for a scanned book some month ago and here it worked. but now ... whats wrong here?