Interesting insights into the new Sony A7R II and RX sensor technology In: Cameras Posted June 23, 2015 basically sony allowed engineers to determine the MP specification, canon let the marketing team decide on it. go it.. no wonder the sony sensor runs circles around canon's.But question, what does it take to make good 4K video using the full frame area? What does sony need to work out the resolution to? 8K oversample down to 4K? It may be beyond what they can do today but I'm thinking sony will beat canon to this. no doubt.