12-26-2016, 08:52 AM
Quote:There is no issue reported by any 6D owner on any forum that I have seen of calibration issues with a changed Canon Eg-X screen, obican. I have no such issues with my Eg-S either, nor the standard one. Issues of that kind usually arise when people use 3rd party focus screens which originally came from different cameras.
And you are correct, with the Eg-S you can judge large aperture lenses being in focus like f1.2.
Allow me with my humble knowledge to intervene here: Any focus screen needs calibration, even the one that came with your brand new camera, of course industry precision made things easier, but whatever lens and whatever camera whatever focus screen will benefit from calibration, in mirrorless world since you are using the same sensor for viewing focusing and capturing your pictures you don't need it.
All depends on how picky you are and your degree of tolerance for imperfections... As I can imagine from your posts you seem to be a perfection seeker...