According to the colophon, half of the Shahnama was written by Mulla Adina Katib (Bukhari), and half by Mir Mah b. Mir 'Arab. The manuscript contains a mixture of original paintings of rather nice quality, and some more recent work (five paintings) evidently added in India or Kashmir in the 18th century: these tend also to be painted over the text.
For a brief discussion of the manuscript, see Karin Ruehrdanz, "The Samarqand Shahnamas in the context of dynastic change", Shahnama Studies II (Leiden, 2012), p.217.
Some paintings missed in preliminary investigation. Images requested.
A catalogue of Persian manuscripts in the Azir Collection of the Punjab University Library of Lahore.