Required sharpness is difficult to calculate

Hi Echi,

Sharpness for me is so easy. First, I don't care all that much about sharpness because I know the weakness in my personal images has nothing to do with camera performance or sharpness, so there is that. And second, I print small. At the moment most of my prints are 5x7", which is a tiny fraction of the size required to satisfy the modern eye. At that size my images are acceptably sharp.

If I decide to go big with the prints though, I may have a problem.

I have never used a camera with more than 6 megapixels, so I can only imagine the flexibility and raw power you're trying to control. You have the ability to print as large as a barn door if you like, which is amazing to me, and does require a level of sharpness and technique beyond what I use. Zone focusing, when done right, offers that powerful mix of sharpness in the camera with the fluidity of not needing to constantly tinker with the camera when you're supposed to be seeing and feeling.

It's great fun learning this stuff, isn't it?

Jeff