If you go here you find 80 000 pictures and 7500 illuminations ! Clic and see that.
A research index : just enable “les images numerisées” and input in “Date par siècle” a number between 5 to 18 and good surfing 
Pilou
Ps Zoom is possible !
Hi Pilou
They are beautiful - thanks for the link, I love illuminated manuscripts.
So much so I have been working for a little while on a 3D illuminated manuscript page of my own (chopping and changing between projects as usual). Here’s a very early WIP - the arch was textured using your technique 
and the background is just a placer photo to help with atmosphere. The hardest thing to do I have found is trying to work out how to mimic the often odd perspective 
Here are a couple more links to illuminated manuscript resources I found while researching. It’s fantastic that libraries are making these resources available for a worldwide audience.
Hi Bonecradle
Mandragore.bnf is a section of the Bibliotheque Nationale de France 
Pilou
Ps Your inside Cathedral (?) seems very good ! Thx for the use of pilou’s technic :rolleyes:
Zbrush has Pespective inside Deformation !
With Frontal perspective it’s more esasy than 3 points of vanish points 
Bnf again
Visual
Virtual expos