I have been a Canon user since the beginning of time. My first big boy SLR was a Canon T90. My current Cannon is a EOS 5D mark ii. About two years ago I purchased a Sony a7ii with a metabone that enables me to use my rather large collection of Canon glass. I have noticed that the Sony produces a sharper image in camera compared to my 5D. The only difference is the camera body. So I believe (just guessing at this point) that the difference in sharpness is caused by a slight shake from the mirror on the 5D. I am starting to shoot (experiment has just begun) the 5D with mirror up to compare if in fact there is a difference in sharpness between the two cameras. I am looking for any suggestions that will assist me in fine tuning my experiment. I am trying to create a check list so that all photos taken during the experiment are taken with the same settings and equipment. I am not looking for any Lightroom / Photoshop suggestions regarding sharpening. I am more interested in producing a sharp in camera image. Any suggestions.