I'm not an expert on the on the inner workings of the human eye, but yes I believe the severity of the "blur" effect depends on the difference between the dista

I'm not an expert on the on the inner workings of the human eye, but yes I believe the severity of the "blur" effect depends on the difference between the distance of the focal plane the object is rendered on and the actual distance your eyes are focusing on. As long as it's "close enough" you won't notice. (Though I have no idea how close "close enough" is for the average human.)