Quote Originally Posted by fralexis View Post
So it IS a good practice to shoot at one half the rated ISO? I'm also struggling at getting consistently good exposures. With my spot meter, I find it hard to determine what is middle grey in a landscape. I want to try just placing a dark shadow in zone III. Otherwise, I'll use my digital meter
No, use the box speed and do what you are already doing. If all your equipment is properly calibrated and you are using the light meter correctly, one rarely needs to adjust ISO to get the full shadow depth.

Some people make a career out of continuously test and retesting file. Their time would be better used actually taking photographs.