Ive been thinking lately my 70-200 2.8 Mk2 canon lens(on 5dmk2) isnt as sharp as it was, so i was out today and purposly did some test shots (nothing scientific).
Situation: tripod, remote release, mirror lockup, i used a range of F stops, on iso 100, and no IS with manual focus. My eyes are nearly 20/20 (actually i havent checked the diopter yet)
I manually focused using live view x10 so the center was looking perfect (subject was some static log pile
One thing i will add and i dont know if it means anything, when i view live view at x10, it looks nice and sharp and i take a picture, then zoom in on that image on the camera to the max which then looks the same as live view at x10, and it doesnt look quite as sharp as the live view. There probably isnt much in it but im sure i can detect it.
Looked at the results tonight at 100% and i dont think its as sharp as it should be, or infact, as it was on day one. I might be wrong.
I am a pixel peeper for a very good reason. Stock sites are pixel peepers so i need to be.
Hopefully is me doing something wrong.
What is the best way to test it at home?
Thanks for any help