I recently added a Peak Model II to my darkroom. It came to me cheaply and I had wanted to try one and compare to my Paterson Major and Microsight. The two that I had agreed with each other and I was pleased with the results. The Peak doesn't agree with the other two but I've just fiddled with it a bit and haven't put it into a printing session yet.
I believe that I understand the general principle of the grain focusing (optically) but the Peak got me thinking about how the grid is placed into a range of focus simultaneously with the grain that is so far away? I assume that it is similar to the function of a rifle scope and its cross hairs. On the Peak, it seems that if one has the grid in focus, you are then tuned to the proper focus of the grain?
Lastly, I find it more comfortable to use without my glasses.... What errors am I introducing by using my near-sighted eyes vs my corrected through-glasses vision?
I believe that I understand the general principle of the grain focusing (optically) but the Peak got me thinking about how the grid is placed into a range of focus simultaneously with the grain that is so far away? I assume that it is similar to the function of a rifle scope and its cross hairs. On the Peak, it seems that if one has the grid in focus, you are then tuned to the proper focus of the grain?
Lastly, I find it more comfortable to use without my glasses.... What errors am I introducing by using my near-sighted eyes vs my corrected through-glasses vision?