We've created this Forum Thread with some workarounds and advice to assist you in publishing you ebook.
Images printing too dark
I've just received my first book proof, with great excitement, it arrived at the time of Prince William's wedding. The cover in colour was amazing and very professional. Anyway, my pleasure short lived, when I noticed that all the images (from jpg files) in the internal pages, were printed very dark.
I had actually printed out my book on my own printer at home and the images worked well and had greyscale shading etc. It also looks good on the pc and as an eBook. Sadly, via the Lulu printed, images came out as a big black or dark shade. Does anyone know what I should do to lighten up the pictures. I certainly do not want my book to go to the masses looking like this. Thanks for sharing any suggestions to improve. Merci.