Dear all, I need some help on this. The other day I went to the mountain. I was on top of it overlooking a terrace rice field in the valley below. I shot a photo and set the aperture to very small, it was probably around f/29. And the photo came out like this: Terrace rice field (Sigma 70-300, photo shot at 300 mm) My question it: If this was your case, what would you set the aperture to be? In my case the photo doesn't look sharp and that upsets me. Great thanks to any answer of yours! Cheers, mate!