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
IMO the most reliable type of meter is an incident meter. Reflective measurement can be done Very well too but it typically requires more experience. As you have found, it requires judgement to pick the right point in the scene.

Adjusting to 1/2 box speed adds more safety factor but there are downsides to using extra as a blanket fix, like slower shutter speed, more grain, ... It is not a magic bullet.

Personally I incident meter and shoot at box speed and develop normally; systemic failures are very, very, rare doing this.