Hello Sakin,
regarding your last message, I thought that my problem was linked to the size of my pictures. Actually I bought these pictures under the “middle format”. And when you try to change the size of your image, you only can reduce and so I can’t get to the 1280 pixels.
But then I tried with personal photos that I have on my computer. Theses ones, I can change the size. So I tried with 3 pictures (by changing the size, which arrives about 960 pixels width even if my original size of picture is 2592 x 1936) and add this to my diaporama, but I still have points instead of my pictures.
Before buying new sizes of my pictures (which are very expensive when you need 1280 width) I have to be sure that my problem is due to the format/size of the pictures that I am trying to put in my diaporama.
Thanks for your help