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If the Byzantines would have had any chance against the Ottoman attack on Constantinople, it would have been before the Ottomans had even known about the Bronze Cannon at all. The technology of the Bronze Cannon came from a Hungarian engineer and Bronze caster known as Orban. Before approaching Ottoman ruler and leader Mehmed II with his technology, Orban had approached Constantine XI, emperor of the financially impoverished Byzantine Empire, in 1452 and offered him the Bronze cannon technology. In seeking a massive fortune and pay for his services, Orban thought it would be best suited to approach the Byzantines. However, during the previous 150 years the Byzantine Empire had shrank and crumbled to no more than the borders of the walls of Constantinople which was completely surrounded by Ottoman controlled land. With the shrinkage of the Byzantine Empire, Emperor Constantine XI was unable to fulfill full payment for the Bronze cannons. Although Constantine XI was not able to fully pay Orban for his services, he was extremely interested and had offered a very small pay in an attempt to keep him in the city of Constantinople. Orban`s tiny payment was not paid regularly and as the year wore on, Orban had become frustrated with the Byzantine Emperor and decided that he would bring his services elsewhere. .
Orban had travelled to Edirne where he would meet with young sultan and ruler of the Ottoman Empire, Mehmed II. At the time of Orban`s offering, Mehmed II was pained by the thought that Constantinople would make a wonderful new Capital for his empire. "The city was the ultimate prize; it would provide a fitting capital for the Ottoman Empire, and its capture was the subject of ancient Muslim prophecies, attributed to Muhammad himself, that predicted great honor for its eventual conqueror no army had found a way to crack open those walls." The arrival of Orban marked the first time any foreign army would be able to breach the land walls and once and for all take control over Constantinople.