Thank you for the quick reply William.
So can it be that a high resolution image has not been used when making the following album page: Page 6 ?
If I look at the file properties it says 6720 x 4480 though. However, there's a DPI of 96.
When it comes to your question, I have brought this up to the photographer, and they are asking me to select other pictures, and to make some pictures smaller in the page (for instance the page we are discussing now). The problem is that there are not that many pictures from different scenes for us to select from, and it would be a bit boring to have pictures only from one scene taken outside at day light (which looks great).
They have also said that it takes too much time to repair an image that is grainy, and that the result will not be so good anyway.
Another pic that we wanted enlarged for the whole page is this: _NT_2162.jpg
I just want to finish the album, so want to know if someone know the reason (if I'm not the wrong one thinking this) and if this can be solved somehow.
I mean, we can't retake these pics... so the situation is as it is now.
The important thing is that it looks good when printed out in the album.