Originally posted by madison_wi_gal Excellent source, but i hadn't bought it (yet) since this K-1 II is a loaner. This makes me determined to buy it if I ever get my Viridian... since the official manual does not explain well.
Yes, as you had found, but I had found it odd that a view that is dynamic (choice of 6 grids, changing meters/info) has permanent corner markers that are not indicative of WHAT the AF point is at the moment, but now that I have dug further this makes sense: Even if using single point focus, and that single point can be moved by the photographer, Pentax is saying "this is as far as you can go with that dot"
The guidelines help you to anticipate how effectively you may be able to focus. In both views (through the viewfinder, and the live view), the focus point chosen by the camera is highlighted briefly when you half press the shutter. It is always within those guideline corners. I found that if I intentionally framed the image such that an attractive focus point (such as a sharp defined line on the subject) was positioned just outside the corners, then I often got the lens to hunt for focus and maybe not achieve a focus. When I reframed to put that high contrast point within the corners, I often got a quick focus on that point. So, if you are having some issues getting a certain image to focus, you can reframe using the guide corners to help it out. I often just use center point focus, so I put the center on what I want sharp, half press, then reframe and shoot, so I don't worry about the guide corners very often. This is the way I learned focusing over 50 years ago with my Spotmatic (center microprism), and it is still the most comfortable for me.
I definitely recommend the ebook. I think you can get it free if you contribute to the forum as a supporter - at least it was that way when I started annual support.
Good luck with the K-1-II, if you decide to get one! It is an excellent camera. - Richard.