Hello,
A question related to some shots taken at a distance of 110 metres and one taken at 85 metres with a focal length of 400mm. The result looks great at zero magnification.

In general would it be unreasonable to expect a clear view at zero crop and with a tight crop over the mentioned distances. What would be a size could be expected before the grain becomes very obvious. In percentage terms an increase to the image of 50%, 75% etc.?

My main concern is that I maybe expecting far too much from my lenses, or that my focus and hand tremors are taking more of a toll than I would like.

Thank you Journeyman, (Dennis)