It is a question of personal photographic filosofi, what you do with your equipment.
I print, upp to 1 och 2 meter on the long side, so I check my PP at 50% zoom to get a feeling for how it will look printed.
And I do mostly landscape photography.
If I go to 100% or more, then I see things on screen that I don't see in the print.
The beauty of the crop sensor is that I don't use the extreme corners of the lens.
SWC 903 <- Link
Here you will find a 100 MB file in the .fff format.
It is a photo of a brick wall at f11 and iso 800.
The photo is unevenly lit, darkest in the left corner.
Use the Phocus software with lens correction for a CFI 40 FL, that will take care of a lot of the vingeting.
So you can check for your self, if the result is up to your standard.
But please state the intended output when you give a judgment.
Ray